LAS VEGAS, NV - MAY 17: Musician Calvin Harris attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Jennifer Lopez attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Ed Sheeran attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Jennifer Lopez attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Ed Sheeran attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Jennifer Lopez attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Model Olivia Culpo attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Wayne Newton attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Britney Spears and Charlie Ebersol attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Wayne Newton attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Model Lily Aldridge attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Calvin Harris attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Britney Spears attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Rapper 50 Cent attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Britney Spears and Charlie Ebersol attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Rapper 50 Cent attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Mariah Carey attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Meghan Trainor attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Rita Ora attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Meghan Trainor attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Rita Ora attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Estelle attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Taylor Swift attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Writer Panio Gianopoulos and Actress Molly Ringwald attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Mariah Carey attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Models Jourdan Dunn and Kendall Jenner, both wearing Balmain x H&M, attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Rita Ora attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: (L-R) Model Jourdan Dunn, designer Olivier Rousteing and model Kendall Jenner, all wearing Balmain x H&M, attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actress/singer Zendaya, actress Hailee Steinfeld, musician Taylor Swift, model Lily Aldridge and model Martha Hunt attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: (L-R) Model Jourdan Dunn, designer Olivier Rousteing and model Kendall Jenner, all wearing Balmain x H&M, attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Taylor Swift attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Ed Sheeran attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Jennifer Lopez attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Model Kendall Jenner wearing Balmain x H&M attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Jennifer Lopez attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Host Ludacris attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: (L-R) Singers Lauren Jauregui, Ally Brooke, Normani Hamilton, Dinah-Jane Hansen and Camila Cabello of Fifth Harmony attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Model Kendall Jenner wearing Balmain x H&M attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Jennifer Lopez attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actress Taraji P. Henson attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actress Lia Marie Johnson (L) and singer Trevor Moran attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actress Molly Ringwald attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Mariah Carey attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actress Molly Ringwald attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: (L-R) Singers Liam Payne, Louis Tomlinson, Niall Horan, and Harry Styles of One Direction attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Model Kendall Jenner wearing Balmain x H&M attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Athlete Nick Young and musician Iggy Azalea attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Host Ludacris attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Rita Ora attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actress Hailee Steinfeld attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Rita Ora attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actress Tracee Ellis Ross attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: (L-R) Singers Liam Payne, Louis Tomlinson, Niall Horan, and Harry Styles of One Direction attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actress Hailee Steinfeld attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: (L-R) Singers Liam Payne, Louis Tomlinson, Niall Horan, and Harry Styles of One Direction attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Model Kendall Jenner wearing Balmain x H&M attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Mariah Carey attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actress Stefanie Scott attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Harry Styles attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Model Kylie Jenner attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Harry Styles attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Model Kylie Jenner attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Rita Ora attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Model Kylie Jenner attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Rita Ora attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actor Casper Smart attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Mariah Carey attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actor Casper Smart attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Mariah Carey attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Miss America 2015 Kira Kazantsev attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Mariah Carey attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer David Lee Roth of Van Halen attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Dencia attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: (L-R) Musicians Andy Hurley, Pete Wentz, Patrick Stump, and Joe Trohman of Fall Out Boy attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Host Chrissy Teigen (L) and musician John Legend attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Pete Wentz of Fall Out Boy attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Dencia attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Illusionist David Copperfield attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Host Chrissy Teigen (L) and musician John Legend attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actress Danica McKellar attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Dencia attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actress Danica McKellar attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician John Legend attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actress-singer Zendaya attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Host Chrissy Teigen attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Charli XCX attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Host Chrissy Teigen attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Hozier attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Nick Jonas (R) and model Olivia Culpo attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer David Lee Roth of Van Halen attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Iggy Azalea and musician Britney Spears attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Hozier attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Iggy Azalea and musician Britney Spears attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer David Lee Roth of Van Halen attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Britney Spears attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Comedian Kingsley attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actress/singer Zendaya, actress Hailee Steinfeld, musician Taylor Swift, model Lily Aldridge and model Martha Hunt attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Rapper Iggy Azalea attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Rapper Iggy Azalea attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Taylor Swift attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Taylor Swift attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Taylor Swift attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Rapper Wiz Khalifa attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Rapper Wiz Khalifa attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Rapper Wiz Khalifa attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Jennifer Lopez attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Jennifer Lopez attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Jennifer Lopez attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Jennifer Lopez attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Wayne Newton attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Wayne Newton attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Calvin Harris attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Rapper 50 Cent attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actress Lia Marie Johnson (L) and singer Trevor Moran attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Rapper 50 Cent attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Mariah Carey attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Meghan Trainor attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: (L-R) Singers Liam Payne, Louis Tomlinson, Niall Horan, and Harry Styles of One Direction attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Meghan Trainor attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Athlete Nick Young and musician Iggy Azalea attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Estelle attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Rita Ora attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Writer Panio Gianopoulos and Actress Molly Ringwald attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Rita Ora attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Models Jourdan Dunn and Kendall Jenner, both wearing Balmain x H&M, attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: (L-R) Singers Liam Payne, Louis Tomlinson, Niall Horan, and Harry Styles of One Direction attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: (L-R) Model Jourdan Dunn, designer Olivier Rousteing and model Kendall Jenner, all wearing Balmain x H&M, attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: (L-R) Singers Liam Payne, Louis Tomlinson, Niall Horan, and Harry Styles of One Direction attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: (L-R) Model Jourdan Dunn, designer Olivier Rousteing and model Kendall Jenner, all wearing Balmain x H&M, attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Mariah Carey attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Ed Sheeran attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Harry Styles attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Model Kendall Jenner wearing Balmain x H&M attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Harry Styles attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Host Ludacris attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Rita Ora attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Model Kendall Jenner wearing Balmain x H&M attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Rita Ora attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actress Taraji P. Henson attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Mariah Carey attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actress Molly Ringwald attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Mariah Carey attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actress Molly Ringwald attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Mariah Carey attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Model Kendall Jenner wearing Balmain x H&M attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Dencia attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Host Ludacris attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Host Chrissy Teigen (L) and musician John Legend attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actress Hailee Steinfeld attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Dencia attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actress Tracee Ellis Ross attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Host Chrissy Teigen (L) and musician John Legend attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actress Hailee Steinfeld attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Dencia attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Model Kendall Jenner wearing Balmain x H&M attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician John Legend attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actress Stefanie Scott attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Host Chrissy Teigen attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Model Kylie Jenner attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Host Chrissy Teigen attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Model Kylie Jenner attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Nick Jonas (R) and model Olivia Culpo attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Model Kylie Jenner attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Iggy Azalea and musician Britney Spears attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actor Casper Smart attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Iggy Azalea and musician Britney Spears attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actor Casper Smart attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Britney Spears attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Miss America 2015 Kira Kazantsev attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actress/singer Zendaya, actress Hailee Steinfeld, musician Taylor Swift, model Lily Aldridge and model Martha Hunt attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer David Lee Roth of Van Halen attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Rapper Iggy Azalea attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: (L-R) Musicians Andy Hurley, Pete Wentz, Patrick Stump, and Joe Trohman of Fall Out Boy attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Rapper Iggy Azalea attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Pete Wentz of Fall Out Boy attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Taylor Swift attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Illusionist David Copperfield attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Taylor Swift attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actress Danica McKellar attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actress Danica McKellar attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Rapper Wiz Khalifa attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actress-singer Zendaya attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Rapper Wiz Khalifa attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Charli XCX attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Rapper Wiz Khalifa attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Hozier attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Jennifer Lopez attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer David Lee Roth of Van Halen attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Jennifer Lopez attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Hozier attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Jennifer Lopez attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer David Lee Roth of Van Halen attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Jennifer Lopez attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Comedian Kingsley attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Wayne Newton attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Wayne Newton attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Calvin Harris attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Rapper 50 Cent attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Rapper 50 Cent attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Meghan Trainor attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Meghan Trainor attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Estelle attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Writer Panio Gianopoulos and Actress Molly Ringwald attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Models Jourdan Dunn and Kendall Jenner, both wearing Balmain x H&M, attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: (L-R) Model Jourdan Dunn, designer Olivier Rousteing and model Kendall Jenner, all wearing Balmain x H&M, attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: (L-R) Model Jourdan Dunn, designer Olivier Rousteing and model Kendall Jenner, all wearing Balmain x H&M, attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Ed Sheeran attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Model Kendall Jenner wearing Balmain x H&M attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Host Ludacris attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Model Kendall Jenner wearing Balmain x H&M attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actress Taraji P. Henson attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actress Lia Marie Johnson (L) and singer Trevor Moran attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actress Molly Ringwald attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Mariah Carey attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actress Molly Ringwald attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: (L-R) Singers Liam Payne, Louis Tomlinson, Niall Horan, and Harry Styles of One Direction attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Model Kendall Jenner wearing Balmain x H&M attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Athlete Nick Young and musician Iggy Azalea attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Host Ludacris attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Rita Ora attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actress Hailee Steinfeld attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Rita Ora attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actress Tracee Ellis Ross attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: (L-R) Singers Liam Payne, Louis Tomlinson, Niall Horan, and Harry Styles of One Direction attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actress Hailee Steinfeld attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: (L-R) Singers Liam Payne, Louis Tomlinson, Niall Horan, and Harry Styles of One Direction attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Model Kendall Jenner wearing Balmain x H&M attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Mariah Carey attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actress Stefanie Scott attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Harry Styles attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Model Kylie Jenner attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Harry Styles attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Model Kylie Jenner attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Rita Ora attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Model Kylie Jenner attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Rita Ora attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actor Casper Smart attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Mariah Carey attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actor Casper Smart attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Mariah Carey attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Miss America 2015 Kira Kazantsev attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Mariah Carey attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer David Lee Roth of Van Halen attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Dencia attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: (L-R) Musicians Andy Hurley, Pete Wentz, Patrick Stump, and Joe Trohman of Fall Out Boy attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Host Chrissy Teigen (L) and musician John Legend attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Pete Wentz of Fall Out Boy attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Dencia attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Illusionist David Copperfield attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Host Chrissy Teigen (L) and musician John Legend attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actress Danica McKellar attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Dencia attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actress Danica McKellar attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician John Legend attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actress-singer Zendaya attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Host Chrissy Teigen attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Charli XCX attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Host Chrissy Teigen attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Hozier attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Nick Jonas (R) and model Olivia Culpo attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer David Lee Roth of Van Halen attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Iggy Azalea and musician Britney Spears attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Hozier attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Iggy Azalea and musician Britney Spears attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer David Lee Roth of Van Halen attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Britney Spears attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Comedian Kingsley attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actress/singer Zendaya, actress Hailee Steinfeld, musician Taylor Swift, model Lily Aldridge and model Martha Hunt attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Taylor Swift attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Rapper Iggy Azalea attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Taylor Swift attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Rapper Iggy Azalea attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Taylor Swift attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Taylor Swift attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Taylor Swift attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Taylor Swift attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Jennifer Lopez attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Mariah Carey attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Rapper Wiz Khalifa attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Mariah Carey attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Rapper Wiz Khalifa attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Calvin Harris attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Rapper Wiz Khalifa attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Jennifer Lopez attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Jennifer Lopez attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
Singers Louis Tomlinson and Niall Horan of One Direction attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. the 2015 Billboard Music Awards, May 17, 2015, at the MGM Grand Garden Arena in Las Vegas, Nevada. AFP PHOTO / ROBYN BECK (Photo credit should read ROBYN BECK/AFP/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Jennifer Lopez attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: (L-R) Singers Liam Payne, Louis Tomlinson, Niall Horan, and Harry Styles of One Direction attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Jennifer Lopez attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
Singers Liam Payne, Louis Tomlinson, Niall Horan, and Harry Styles of One Direction attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. the 2015 Billboard Music Awards, May 17, 2015, at the MGM Grand Garden Arena in Las Vegas, Nevada. AFP PHOTO / ROBYN BECK (Photo credit should read ROBYN BECK/AFP/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Jennifer Lopez attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Model Kendall Jenner wearing Balmain x H&M attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Wayne Newton attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
Rita Ora attends the 2015 Billboard Music Awards, May 17, 2015, at the MGM Grand Garden Arena in Las Vegas, Nevada. AFP PHOTO / ROBYN BECK (Photo credit should read ROBYN BECK/AFP/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Wayne Newton attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
Singer Harry Styles of One Direction attends the 2015 Billboard Music Awards, May 17, 2015, at the MGM Grand Garden Arena in Las Vegas, Nevada. AFP PHOTO / ROBYN BECK (Photo credit should read ROBYN BECK/AFP/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Calvin Harris attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Louis Tomlinson of One Direction attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Rapper 50 Cent attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Niall Horan of One Direction attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Rapper 50 Cent attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Liam Payne of One Direction attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Meghan Trainor attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Harry Styles of One Direction attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Meghan Trainor attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Rita Ora attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Estelle attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Rita Ora attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Writer Panio Gianopoulos and Actress Molly Ringwald attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
Laverne Cox attends the 2015 Billboard Music Awards, May 17, 2015, at the MGM Grand Garden Arena in Las Vegas, Nevada. AFP PHOTO / ROBYN BECK (Photo credit should read ROBYN BECK/AFP/Getty Images)
LAS VEGAS, NV - MAY 17: Models Jourdan Dunn and Kendall Jenner, both wearing Balmain x H&M, attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
Laverne Cox attends the 2015 Billboard Music Awards, May 17, 2015, at the MGM Grand Garden Arena in Las Vegas, Nevada. AFP PHOTO / ROBYN BECK (Photo credit should read ROBYN BECK/AFP/Getty Images)
LAS VEGAS, NV - MAY 17: (L-R) Model Jourdan Dunn, designer Olivier Rousteing and model Kendall Jenner, all wearing Balmain x H&M, attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: TV personality Giuliana Rancic attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: (L-R) Model Jourdan Dunn, designer Olivier Rousteing and model Kendall Jenner, all wearing Balmain x H&M, attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: TV personality Giuliana Rancic attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Ed Sheeran attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer-songwriter Bonnie McKee attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Model Kendall Jenner wearing Balmain x H&M attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actress Jennette McCurdy attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Host Ludacris attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Hozier attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Model Kendall Jenner wearing Balmain x H&M attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Charli XCX attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actress Taraji P. Henson attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actress-singer Zendaya attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actress Molly Ringwald attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actress-singer Zendaya attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actress Molly Ringwald attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actress-singer Zendaya attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Model Kendall Jenner wearing Balmain x H&M attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Liane Valenzuela attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Host Ludacris attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Miss America 2015 Kira Kazantsev attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actress Hailee Steinfeld attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Prince Royce attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actress Tracee Ellis Ross attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Pete Wentz of Fall Out Boy attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actress Hailee Steinfeld attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Viner Cameron Dallas attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Model Kendall Jenner wearing Balmain x H&M attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Tori Kelly attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actress Stefanie Scott attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Karen Fairchild of Little Big Town attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Model Kylie Jenner attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Karen Fairchild of Little Big Town attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Model Kylie Jenner attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Kimberly Schlapman of Little Big Town attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Model Kylie Jenner attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: (L-R) Musicians Philip Sweet, Kimberly Schlapman, Karen Fairchild, and Jimi Westbrook of Little Big Town attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actor Casper Smart attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Natalie La Rose attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actor Casper Smart attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Natalie La Rose attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Miss America 2015 Kira Kazantsev attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Model Kylie Jenner attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer David Lee Roth of Van Halen attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Model Kylie Jenner attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: (L-R) Musicians Andy Hurley, Pete Wentz, Patrick Stump, and Joe Trohman of Fall Out Boy attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Model Kylie Jenner attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Pete Wentz of Fall Out Boy attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Model Kylie Jenner attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Illusionist David Copperfield attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Calvin Harris attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actress Danica McKellar attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Ed Sheeran attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actress Danica McKellar attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Ed Sheeran attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actress-singer Zendaya attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Model Olivia Culpo attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Charli XCX attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Britney Spears and Charlie Ebersol attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Hozier attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Model Lily Aldridge attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer David Lee Roth of Van Halen attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Britney Spears attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Hozier attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Britney Spears and Charlie Ebersol attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer David Lee Roth of Van Halen attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Mariah Carey attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Comedian Kingsley attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Rita Ora attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Taylor Swift attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Rita Ora attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Taylor Swift attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Taylor Swift attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Taylor Swift attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Mariah Carey attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Taylor Swift attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Rita Ora attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Jennifer Lopez attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actress/singer Zendaya, actress Hailee Steinfeld, musician Taylor Swift, model Lily Aldridge and model Martha Hunt attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Mariah Carey attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Taylor Swift attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Mariah Carey attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Jennifer Lopez attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Calvin Harris attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Jennifer Lopez attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Jennifer Lopez attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: (L-R) Singers Lauren Jauregui, Ally Brooke, Normani Hamilton, Dinah-Jane Hansen and Camila Cabello of Fifth Harmony attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
Singers Louis Tomlinson and Niall Horan of One Direction attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. the 2015 Billboard Music Awards, May 17, 2015, at the MGM Grand Garden Arena in Las Vegas, Nevada. AFP PHOTO / ROBYN BECK (Photo credit should read ROBYN BECK/AFP/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Jennifer Lopez attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: (L-R) Singers Liam Payne, Louis Tomlinson, Niall Horan, and Harry Styles of One Direction attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actress Lia Marie Johnson (L) and singer Trevor Moran attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
Singers Liam Payne, Louis Tomlinson, Niall Horan, and Harry Styles of One Direction attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. the 2015 Billboard Music Awards, May 17, 2015, at the MGM Grand Garden Arena in Las Vegas, Nevada. AFP PHOTO / ROBYN BECK (Photo credit should read ROBYN BECK/AFP/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Mariah Carey attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Model Kendall Jenner wearing Balmain x H&M attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: (L-R) Singers Liam Payne, Louis Tomlinson, Niall Horan, and Harry Styles of One Direction attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
Rita Ora attends the 2015 Billboard Music Awards, May 17, 2015, at the MGM Grand Garden Arena in Las Vegas, Nevada. AFP PHOTO / ROBYN BECK (Photo credit should read ROBYN BECK/AFP/Getty Images)
LAS VEGAS, NV - MAY 17: Athlete Nick Young and musician Iggy Azalea attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
Singer Harry Styles of One Direction attends the 2015 Billboard Music Awards, May 17, 2015, at the MGM Grand Garden Arena in Las Vegas, Nevada. AFP PHOTO / ROBYN BECK (Photo credit should read ROBYN BECK/AFP/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Rita Ora attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Louis Tomlinson of One Direction attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Rita Ora attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Niall Horan of One Direction attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: (L-R) Singers Liam Payne, Louis Tomlinson, Niall Horan, and Harry Styles of One Direction attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Liam Payne of One Direction attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: (L-R) Singers Liam Payne, Louis Tomlinson, Niall Horan, and Harry Styles of One Direction attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Harry Styles of One Direction attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Mariah Carey attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Rita Ora attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Harry Styles attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Rita Ora attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Harry Styles attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
Laverne Cox attends the 2015 Billboard Music Awards, May 17, 2015, at the MGM Grand Garden Arena in Las Vegas, Nevada. AFP PHOTO / ROBYN BECK (Photo credit should read ROBYN BECK/AFP/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Rita Ora attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
Laverne Cox attends the 2015 Billboard Music Awards, May 17, 2015, at the MGM Grand Garden Arena in Las Vegas, Nevada. AFP PHOTO / ROBYN BECK (Photo credit should read ROBYN BECK/AFP/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Rita Ora attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: TV personality Giuliana Rancic attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Mariah Carey attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: TV personality Giuliana Rancic attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Mariah Carey attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer-songwriter Bonnie McKee attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Mariah Carey attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actress Jennette McCurdy attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Dencia attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Hozier attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Host Chrissy Teigen (L) and musician John Legend attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Charli XCX attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Dencia attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actress-singer Zendaya attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Host Chrissy Teigen (L) and musician John Legend attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actress-singer Zendaya attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Dencia attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actress-singer Zendaya attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician John Legend attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Liane Valenzuela attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Host Chrissy Teigen attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Miss America 2015 Kira Kazantsev attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Host Chrissy Teigen attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Prince Royce attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Nick Jonas (R) and model Olivia Culpo attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Pete Wentz of Fall Out Boy attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Iggy Azalea and musician Britney Spears attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Viner Cameron Dallas attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Iggy Azalea and musician Britney Spears attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Tori Kelly attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Britney Spears attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Karen Fairchild of Little Big Town attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Actress/singer Zendaya, actress Hailee Steinfeld, musician Taylor Swift, model Lily Aldridge and model Martha Hunt attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Karen Fairchild of Little Big Town attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Rapper Iggy Azalea attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Kimberly Schlapman of Little Big Town attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Rapper Iggy Azalea attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: (L-R) Musicians Philip Sweet, Kimberly Schlapman, Karen Fairchild, and Jimi Westbrook of Little Big Town attend the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Taylor Swift attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Natalie La Rose attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Taylor Swift attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Singer Natalie La Rose attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Taylor Swift attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Model Kylie Jenner attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Rapper Wiz Khalifa attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Model Kylie Jenner attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Rapper Wiz Khalifa attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Model Kylie Jenner attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Rapper Wiz Khalifa attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Model Kylie Jenner attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musician Jennifer Lopez attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
2015 Billboard Music Awards - Red Carpet
