LAS VEGAS, NV - MAY 17: Singer Harry Styles of One Direction, winners of the Top Duo/Group and Top Touring Artist awards, poses in the press room during the 2015 Billboard Music Awards 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 Louis Tomlinson, Liam Payne, Niall Horan, and Harry Styles of One Direction, winners of the Top Duo/Group and Top Touring Artist awards, pose in the press room during the 2015 Billboard Music Awards 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, winner of the Top Radio Song and Top Streaming Song (Audio) awards for 'All of Me,' poses in the press room during the 2015 Billboard Music Awards 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 Celine Dion, fashion detail, poses in the press room during the 2015 Billboard Music Awards 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 poses in the press room during the 2015 Billboard Music Awards 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 Celine Dion poses in the press room during the 2015 Billboard Music Awards 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, winner of Top Hot 100 Song and Top Digital Song for 'All About That Bass,' poses in the press room during the 2015 Billboard Music Awards 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 Celine Dion poses in the press room during the 2015 Billboard Music Awards 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, winner of Top Hot 100 Song and Top Digital Song for 'All About That Bass,' poses in the press room during the 2015 Billboard Music Awards 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 Celine Dion poses in the press room during the 2015 Billboard Music Awards 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 poses in the press room with her eight Billboard Music Awards; Swift won Top Artist, Top Female Artist, Top Billboard 200 Artist, Top Billboard 200 Album for '1989,' Top Hot 100 Artist, Top Digital Songs Artist, Top Streaming Song (Video) for 'Shake It Off,' and Billboard Chart Achievement Award during the 2015 Billboard Music Awards 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 Tyrese Gibson poses in the press room during the 2015 Billboard Music Awards 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 poses in the press room with her eight Billboard Music Awards; Swift won Top Artist, Top Female Artist, Top Billboard 200 Artist, Top Billboard 200 Album for '1989,' Top Hot 100 Artist, Top Digital Songs Artist, Top Streaming Song (Video) for 'Shake It Off,' and Billboard Chart Achievement Award during the 2015 Billboard Music Awards 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 Tyrese Gibson poses in the press room during the 2015 Billboard Music Awards 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 poses in the press room with her eight Billboard Music Awards; Swift won Top Artist, Top Female Artist, Top Billboard 200 Artist, Top Billboard 200 Album for '1989,' Top Hot 100 Artist, Top Digital Songs Artist, Top Streaming Song (Video) for 'Shake It Off,' and Billboard Chart Achievement Award during the 2015 Billboard Music Awards 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 Tyrese Gibson poses in the press room during the 2015 Billboard Music Awards 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 poses in the press room with her eight Billboard Music Awards; Swift won Top Artist, Top Female Artist, Top Billboard 200 Artist, Top Billboard 200 Album for '1989,' Top Hot 100 Artist, Top Digital Songs Artist, Top Streaming Song (Video) for 'Shake It Off,' and Billboard Chart Achievement Award during the 2015 Billboard Music Awards 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 Tyrese Gibson poses in the press room during the 2015 Billboard Music Awards 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 poses in the press room with her eight Billboard Music Awards; Swift won Top Artist, Top Female Artist, Top Billboard 200 Artist, Top Billboard 200 Album for '1989,' Top Hot 100 Artist, Top Digital Songs Artist, Top Streaming Song (Video) for 'Shake It Off,' and Billboard Chart Achievement Award during the 2015 Billboard Music Awards 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, winners of the Top Duo/Group and Top Touring Artist awards, poses in the press room during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musicians Brian Kelley (L) and Tyler Hubbard of Florida Georgia Line, winners of Top Country Artist, pose in the press room during the 2015 Billboard Music Awards 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, winner of the Top Rock Song (for 'Take Me to Church') and Top Rock Artist awards, poses in the press room during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musicians Brian Kelley (L) and Tyler Hubbard of Florida Georgia Line, winners of Top Country Artist, pose in the press room during the 2015 Billboard Music Awards 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, winner of the Top Rock Song (for 'Take Me to Church') and Top Rock Artist awards, poses in the press room during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: DJ David Guetta poses in the press room during the 2015 Billboard Music Awards 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, winners of the Top Duo/Group and Top Touring Artist awards, poses in the press room during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: DJ David Guetta poses in the press room during the 2015 Billboard Music Awards 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, winners of the Top Duo/Group and Top Touring Artist awards, poses in the press room during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: DJ Calvin Harris, winner of Top Dance/Electronic Artist, poses in the press room during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: DJ Calvin Harris, winner of Top Dance/Electronic Artist, poses in the press room during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: DJ Calvin Harris, winner of Top Dance/Electronic Artist, poses in the press room during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: DJ David Guetta poses in the press room during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: DJ Calvin Harris, winner of Top Dance/Electronic Artist, poses in the press room during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: DJ David Guetta poses in the press room during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: DJ Calvin Harris, winner of Top Dance/Electronic Artist, poses in the press room during the 2015 Billboard Music Awards 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, winners of the Top Duo/Group and Top Touring Artist awards, poses in the press room during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: DJ David Guetta poses in the press room during the 2015 Billboard Music Awards 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 poses in the press room during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: DJ David Guetta poses in the press room during the 2015 Billboard Music Awards 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 poses in the press room during the 2015 Billboard Music Awards 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, winner of the Top Rock Song (for 'Take Me to Church') and Top Rock Artist awards, poses in the press room during the 2015 Billboard Music Awards 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 Tyrese Gibson poses in the press room during the 2015 Billboard Music Awards 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, winners of the Top Duo/Group and Top Touring Artist awards, poses in the press room during the 2015 Billboard Music Awards 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, winner of the Top Radio Song and Top Streaming Song (Audio) awards for 'All of Me,' poses in the press room during the 2015 Billboard Music Awards 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 Louis Tomlinson, Liam Payne, Niall Horan, and Harry Styles of One Direction, winners of the Top Duo/Group and Top Touring Artist awards, pose in the press room during the 2015 Billboard Music Awards 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 poses in the press room during the 2015 Billboard Music Awards 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 Louis Tomlinson, Liam Payne, Niall Horan, and Harry Styles of One Direction, winners of the Top Duo/Group and Top Touring Artist awards, pose in the press room during the 2015 Billboard Music Awards 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 poses in the press room during the 2015 Billboard Music Awards 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 Celine Dion poses in the press room during the 2015 Billboard Music Awards 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 poses in the press room during the 2015 Billboard Music Awards 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 Celine Dion poses in the press room during the 2015 Billboard Music Awards 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 poses in the press room during the 2015 Billboard Music Awards 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 Celine Dion poses in the press room during the 2015 Billboard Music Awards 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, winner of Top Hot 100 Song and Top Digital Song for 'All About That Bass,' poses in the press room during the 2015 Billboard Music Awards 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 Celine Dion poses in the press room during the 2015 Billboard Music Awards 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, winner of Top Hot 100 Song and Top Digital Song for 'All About That Bass,' poses in the press room during the 2015 Billboard Music Awards 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 Louis Tomlinson, Liam Payne, Niall Horan, and Harry Styles of One Direction, winners of the Top Duo/Group and Top Touring Artist awards, pose in the press room during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: DJ Calvin Harris, winner of Top Dance/Electronic Artist, poses in the press room during the 2015 Billboard Music Awards 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 Louis Tomlinson, Liam Payne, Niall Horan, and Harry Styles of One Direction, winners of the Top Duo/Group and Top Touring Artist awards, pose in the press room during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: DJ Calvin Harris, winner of Top Dance/Electronic Artist, poses in the press room during the 2015 Billboard Music Awards 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 poses in the press room with her eight Billboard Music Awards; Swift won Top Artist, Top Female Artist, Top Billboard 200 Artist, Top Billboard 200 Album for '1989,' Top Hot 100 Artist, Top Digital Songs Artist, Top Streaming Song (Video) for 'Shake It Off,' and Billboard Chart Achievement Award during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: DJ Calvin Harris, winner of Top Dance/Electronic Artist, poses in the press room during the 2015 Billboard Music Awards 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 poses in the press room with her eight Billboard Music Awards; Swift won Top Artist, Top Female Artist, Top Billboard 200 Artist, Top Billboard 200 Album for '1989,' Top Hot 100 Artist, Top Digital Songs Artist, Top Streaming Song (Video) for 'Shake It Off,' and Billboard Chart Achievement Award during the 2015 Billboard Music Awards 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 poses in the press room with her eight Billboard Music Awards; Swift won Top Artist, Top Female Artist, Top Billboard 200 Artist, Top Billboard 200 Album for '1989,' Top Hot 100 Artist, Top Digital Songs Artist, Top Streaming Song (Video) for 'Shake It Off,' and Billboard Chart Achievement Award during the 2015 Billboard Music Awards 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 poses in the press room with her eight Billboard Music Awards; Swift won Top Artist, Top Female Artist, Top Billboard 200 Artist, Top Billboard 200 Album for '1989,' Top Hot 100 Artist, Top Digital Songs Artist, Top Streaming Song (Video) for 'Shake It Off,' and Billboard Chart Achievement Award during the 2015 Billboard Music Awards 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 poses in the press room with her eight Billboard Music Awards; Swift won Top Artist, Top Female Artist, Top Billboard 200 Artist, Top Billboard 200 Album for '1989,' Top Hot 100 Artist, Top Digital Songs Artist, Top Streaming Song (Video) for 'Shake It Off,' and Billboard Chart Achievement Award during the 2015 Billboard Music Awards 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, winner of Top Hot 100 Song and Top Digital Song for 'All About That Bass,' poses in the press room during the 2015 Billboard Music Awards 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 poses in the press room with her eight Billboard Music Awards; Swift won Top Artist, Top Female Artist, Top Billboard 200 Artist, Top Billboard 200 Album for '1989,' Top Hot 100 Artist, Top Digital Songs Artist, Top Streaming Song (Video) for 'Shake It Off,' and Billboard Chart Achievement Award during the 2015 Billboard Music Awards 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, winner of the Top Radio Song and Top Streaming Song (Audio) awards for 'All of Me,' poses in the press room during the 2015 Billboard Music Awards 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 poses in the press room with her eight Billboard Music Awards; Swift won Top Artist, Top Female Artist, Top Billboard 200 Artist, Top Billboard 200 Album for '1989,' Top Hot 100 Artist, Top Digital Songs Artist, Top Streaming Song (Video) for 'Shake It Off,' and Billboard Chart Achievement Award during the 2015 Billboard Music Awards 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, winner of the Top Radio Song and Top Streaming Song (Audio) awards for 'All of Me,' poses in the press room during the 2015 Billboard Music Awards 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 poses in the press room; Swift won Top Artist, Top Female Artist, Top Billboard 200 Artist, Top Billboard 200 Album for '1989,' Top Hot 100 Artist, Top Digital Songs Artist, Top Streaming Song (Video) for 'Shake It Off,' and Billboard Chart Achievement Award during the 2015 Billboard Music Awards 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, fashion detail, poses in the press room during the 2015 Billboard Music Awards 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 poses in the press room with her eight Billboard Music Awards; Swift won Top Artist, Top Female Artist, Top Billboard 200 Artist, Top Billboard 200 Album for '1989,' Top Hot 100 Artist, Top Digital Songs Artist, Top Streaming Song (Video) for 'Shake It Off,' and Billboard Chart Achievement Award during the 2015 Billboard Music Awards 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 poses in the press room during the 2015 Billboard Music Awards 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 poses in the press room with her eight Billboard Music Awards; Swift won Top Artist, Top Female Artist, Top Billboard 200 Artist, Top Billboard 200 Album for '1989,' Top Hot 100 Artist, Top Digital Songs Artist, Top Streaming Song (Video) for 'Shake It Off,' and Billboard Chart Achievement Award during the 2015 Billboard Music Awards 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, winner of Top Hot 100 Song and Top Digital Song for 'All About That Bass,' poses in the press room during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
Taylor Swift poses in the press room with her awards at 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 Meghan Trainor, winner of Top Hot 100 Song and Top Digital Song for 'All About That Bass,' poses in the press room during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
Taylor Swift poses in the press room with her awards at 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 Taylor Swift poses in the press room with her eight Billboard Music Awards; Swift won Top Artist, Top Female Artist, Top Billboard 200 Artist, Top Billboard 200 Album for '1989,' Top Hot 100 Artist, Top Digital Songs Artist, Top Streaming Song (Video) for 'Shake It Off,' and Billboard Chart Achievement Award during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
Taylor Swift poses in the press room with her awards at 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 Taylor Swift poses in the press room with her eight Billboard Music Awards; Swift won Top Artist, Top Female Artist, Top Billboard 200 Artist, Top Billboard 200 Album for '1989,' Top Hot 100 Artist, Top Digital Songs Artist, Top Streaming Song (Video) for 'Shake It Off,' and Billboard Chart Achievement Award during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
Taylor Swift poses in the press room with her awards at 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: Musicians Brian Kelley (L) and Tyler Hubbard of Florida Georgia Line, winners of Top Country Artist, pose in the press room during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
Taylor Swift poses in the press room iwth her awards at 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: Musicians Brian Kelley (L) and Tyler Hubbard of Florida Georgia Line, winners of Top Country Artist, pose in the press room during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
Taylor Swift poses in the press room iwth her awards at 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: DJ Calvin Harris, winner of Top Dance/Electronic Artist, poses in the press room during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
Meghan Trainor poses in the press room at 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: DJ Calvin Harris, winner of Top Dance/Electronic Artist, poses in the press room during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
Meghan Trainor poses in the press room at 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: DJ Calvin Harris, winner of Top Dance/Electronic Artist, poses in the press room during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
Meghan Trainor poses in the press room at 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: DJ Calvin Harris, winner of Top Dance/Electronic Artist, poses in the press room during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musicians Brian Kelley (L) and Tyler Hubbard of Florida Georgia Line, winners of Top Country Artist, pose in the press room during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: DJ David Guetta poses in the press room during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musicians Brian Kelley (L) and Tyler Hubbard of Florida Georgia Line, winners of Top Country Artist, pose in the press room during the 2015 Billboard Music Awards 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 Tyrese Gibson poses in the press room during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: DJ David Guetta poses in the press room during the 2015 Billboard Music Awards 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 Tyrese Gibson poses in the press room during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
Hozier poses in the press room at 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: Actor Tyrese Gibson poses in the press room during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
Hozier poses in the press room at 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: Actor Tyrese Gibson poses in the press room during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
Hozier poses in the press room at 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 Hozier, winner of the Top Rock Song (for 'Take Me to Church') and Top Rock Artist awards, poses in the press room during the 2015 Billboard Music Awards 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, winner of the Top Rock Song (for 'Take Me to Church') and Top Rock Artist awards, poses in the press room during 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, Liam Payne, Niall Horan, and Harry Styles of One Direction pose in the press room at 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 Harry Styles of One Direction, winners of the Top Duo/Group and Top Touring Artist awards, poses in the press room during 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, Liam Payne, Niall Horan, and Harry Styles of One Direction pose in the press room at 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 Harry Styles of One Direction, winners of the Top Duo/Group and Top Touring Artist awards, poses in the press room during the 2015 Billboard Music Awards 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 Celine Dion, shoe detail, poses in the press room during the 2015 Billboard Music Awards 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 Louis Tomlinson, Liam Payne, Niall Horan, and Harry Styles of One Direction, winners of the Top Duo/Group and Top Touring Artist awards, pose in the press room during the 2015 Billboard Music Awards 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 Celine Dion, shoe detail, poses in the press room during the 2015 Billboard Music Awards 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 Celine Dion, fashion detail, poses in the press room during the 2015 Billboard Music Awards 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 Celine Dion, fashion detail, poses in the press room during the 2015 Billboard Music Awards 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 Celine Dion poses in the press room during the 2015 Billboard Music Awards 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 Celine Dion poses in the press room during the 2015 Billboard Music Awards 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 Celine Dion poses in the press room during the 2015 Billboard Music Awards 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 Celine Dion poses in the press room during the 2015 Billboard Music Awards 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 Celine Dion poses in the press room during the 2015 Billboard Music Awards 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 Celine Dion poses in the press room during the 2015 Billboard Music Awards 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 Tyrese Gibson poses in the press room during the 2015 Billboard Music Awards 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 Celine Dion poses in the press room during the 2015 Billboard Music Awards 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 Tyrese Gibson poses in the press room during the 2015 Billboard Music Awards 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 Tyrese Gibson poses in the press room during the 2015 Billboard Music Awards 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 Tyrese Gibson poses in the press room during the 2015 Billboard Music Awards 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, winners of the Top Duo/Group and Top Touring Artist awards, poses in the press room during the 2015 Billboard Music Awards 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, winner of the Top Rock Song (for 'Take Me to Church') and Top Rock Artist awards, poses in the press room during the 2015 Billboard Music Awards 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, winner of the Top Rock Song (for 'Take Me to Church') and Top Rock Artist awards, poses in the press room during the 2015 Billboard Music Awards 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, winners of the Top Duo/Group and Top Touring Artist awards, poses in the press room during the 2015 Billboard Music Awards 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, winners of the Top Duo/Group and Top Touring Artist awards, poses in the press room during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: DJ Calvin Harris, winner of Top Dance/Electronic Artist, poses in the press room during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: DJ David Guetta poses in the press room during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: DJ David Guetta poses in the press room during the 2015 Billboard Music Awards 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, winners of the Top Duo/Group and Top Touring Artist awards, poses in the press room during the 2015 Billboard Music Awards 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 poses in the press room during the 2015 Billboard Music Awards 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 poses in the press room during the 2015 Billboard Music Awards 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 Tyrese Gibson poses in the press room during the 2015 Billboard Music Awards 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, winner of the Top Radio Song and Top Streaming Song (Audio) awards for 'All of Me,' poses in the press room during the 2015 Billboard Music Awards 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 poses in the press room during the 2015 Billboard Music Awards 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 poses in the press room during the 2015 Billboard Music Awards 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 poses in the press room during the 2015 Billboard Music Awards 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 poses in the press room during the 2015 Billboard Music Awards 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, winner of Top Hot 100 Song and Top Digital Song for 'All About That Bass,' poses in the press room during the 2015 Billboard Music Awards 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, winner of Top Hot 100 Song and Top Digital Song for 'All About That Bass,' poses in the press room during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: DJ Calvin Harris, winner of Top Dance/Electronic Artist, poses in the press room during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: DJ Calvin Harris, winner of Top Dance/Electronic Artist, poses in the press room during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: DJ Calvin Harris, winner of Top Dance/Electronic Artist, poses in the press room during the 2015 Billboard Music Awards 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 poses in the press room with her eight Billboard Music Awards; Swift won Top Artist, Top Female Artist, Top Billboard 200 Artist, Top Billboard 200 Album for '1989,' Top Hot 100 Artist, Top Digital Songs Artist, Top Streaming Song (Video) for 'Shake It Off,' and Billboard Chart Achievement Award during the 2015 Billboard Music Awards 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 poses in the press room with her eight Billboard Music Awards; Swift won Top Artist, Top Female Artist, Top Billboard 200 Artist, Top Billboard 200 Album for '1989,' Top Hot 100 Artist, Top Digital Songs Artist, Top Streaming Song (Video) for 'Shake It Off,' and Billboard Chart Achievement Award during the 2015 Billboard Music Awards 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 poses in the press room with her eight Billboard Music Awards; Swift won Top Artist, Top Female Artist, Top Billboard 200 Artist, Top Billboard 200 Album for '1989,' Top Hot 100 Artist, Top Digital Songs Artist, Top Streaming Song (Video) for 'Shake It Off,' and Billboard Chart Achievement Award during the 2015 Billboard Music Awards 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 poses in the press room with her eight Billboard Music Awards; Swift won Top Artist, Top Female Artist, Top Billboard 200 Artist, Top Billboard 200 Album for '1989,' Top Hot 100 Artist, Top Digital Songs Artist, Top Streaming Song (Video) for 'Shake It Off,' and Billboard Chart Achievement Award during the 2015 Billboard Music Awards 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 poses in the press room; Swift won Top Artist, Top Female Artist, Top Billboard 200 Artist, Top Billboard 200 Album for '1989,' Top Hot 100 Artist, Top Digital Songs Artist, Top Streaming Song (Video) for 'Shake It Off,' and Billboard Chart Achievement Award during the 2015 Billboard Music Awards 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 poses in the press room with her eight Billboard Music Awards; Swift won Top Artist, Top Female Artist, Top Billboard 200 Artist, Top Billboard 200 Album for '1989,' Top Hot 100 Artist, Top Digital Songs Artist, Top Streaming Song (Video) for 'Shake It Off,' and Billboard Chart Achievement Award during the 2015 Billboard Music Awards 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 poses in the press room with her eight Billboard Music Awards; Swift won Top Artist, Top Female Artist, Top Billboard 200 Artist, Top Billboard 200 Album for '1989,' Top Hot 100 Artist, Top Digital Songs Artist, Top Streaming Song (Video) for 'Shake It Off,' and Billboard Chart Achievement Award during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
Taylor Swift poses in the press room with her awards at 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)
Taylor Swift poses in the press room with her awards at 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)
Taylor Swift poses in the press room with her awards at 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)
Taylor Swift poses in the press room with her awards at 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)
Taylor Swift poses in the press room iwth her awards at 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)
Taylor Swift poses in the press room iwth her awards at 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)
Meghan Trainor poses in the press room at 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)
Meghan Trainor poses in the press room at 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)
Meghan Trainor poses in the press room at 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: Musicians Brian Kelley (L) and Tyler Hubbard of Florida Georgia Line, winners of Top Country Artist, pose in the press room during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musicians Brian Kelley (L) and Tyler Hubbard of Florida Georgia Line, winners of Top Country Artist, pose in the press room during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: DJ David Guetta poses in the press room during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
Hozier poses in the press room at 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)
Hozier poses in the press room at 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)
Hozier poses in the press room at 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 Hozier, winner of the Top Rock Song (for 'Take Me to Church') and Top Rock Artist awards, poses in the press room during 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, Liam Payne, Niall Horan, and Harry Styles of One Direction pose in the press room at 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)
Singers Louis Tomlinson, Liam Payne, Niall Horan, and Harry Styles of One Direction pose in the press room at 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 Celine Dion, shoe detail, poses in the press room during the 2015 Billboard Music Awards 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 Celine Dion, shoe detail, poses in the press room during the 2015 Billboard Music Awards 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 Celine Dion, fashion detail, poses in the press room during the 2015 Billboard Music Awards 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 Celine Dion poses in the press room during the 2015 Billboard Music Awards 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 Celine Dion poses in the press room during the 2015 Billboard Music Awards 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 Celine Dion poses in the press room during the 2015 Billboard Music Awards 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 Celine Dion poses in the press room during the 2015 Billboard Music Awards 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, winner of the Top Radio Song and Top Streaming Song (Audio) awards for 'All of Me,' poses in the press room during the 2015 Billboard Music Awards 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 poses in the press room during the 2015 Billboard Music Awards 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, winner of Top Hot 100 Song and Top Digital Song for 'All About That Bass,' poses in the press room during the 2015 Billboard Music Awards 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, winner of Top Hot 100 Song and Top Digital Song for 'All About That Bass,' poses in the press room during the 2015 Billboard Music Awards 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 poses in the press room with her eight Billboard Music Awards; Swift won Top Artist, Top Female Artist, Top Billboard 200 Artist, Top Billboard 200 Album for '1989,' Top Hot 100 Artist, Top Digital Songs Artist, Top Streaming Song (Video) for 'Shake It Off,' and Billboard Chart Achievement Award during the 2015 Billboard Music Awards 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 poses in the press room with her eight Billboard Music Awards; Swift won Top Artist, Top Female Artist, Top Billboard 200 Artist, Top Billboard 200 Album for '1989,' Top Hot 100 Artist, Top Digital Songs Artist, Top Streaming Song (Video) for 'Shake It Off,' and Billboard Chart Achievement Award during the 2015 Billboard Music Awards 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 poses in the press room with her eight Billboard Music Awards; Swift won Top Artist, Top Female Artist, Top Billboard 200 Artist, Top Billboard 200 Album for '1989,' Top Hot 100 Artist, Top Digital Songs Artist, Top Streaming Song (Video) for 'Shake It Off,' and Billboard Chart Achievement Award during the 2015 Billboard Music Awards 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 poses in the press room with her eight Billboard Music Awards; Swift won Top Artist, Top Female Artist, Top Billboard 200 Artist, Top Billboard 200 Album for '1989,' Top Hot 100 Artist, Top Digital Songs Artist, Top Streaming Song (Video) for 'Shake It Off,' and Billboard Chart Achievement Award during the 2015 Billboard Music Awards 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 poses in the press room with her eight Billboard Music Awards; Swift won Top Artist, Top Female Artist, Top Billboard 200 Artist, Top Billboard 200 Album for '1989,' Top Hot 100 Artist, Top Digital Songs Artist, Top Streaming Song (Video) for 'Shake It Off,' and Billboard Chart Achievement Award during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musicians Brian Kelley (L) and Tyler Hubbard of Florida Georgia Line, winners of Top Country Artist, pose in the press room during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musicians Brian Kelley (L) and Tyler Hubbard of Florida Georgia Line, winners of Top Country Artist, pose in the press room during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: DJ David Guetta poses in the press room during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: DJ David Guetta poses in the press room during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: DJ Calvin Harris, winner of Top Dance/Electronic Artist, poses in the press room during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: DJ Calvin Harris, winner of Top Dance/Electronic Artist, poses in the press room during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: DJ Calvin Harris, winner of Top Dance/Electronic Artist, poses in the press room during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: DJ Calvin Harris, winner of Top Dance/Electronic Artist, poses in the press room during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: DJ David Guetta poses in the press room during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: DJ David Guetta poses in the press room during the 2015 Billboard Music Awards 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, winner of the Top Rock Song (for 'Take Me to Church') and Top Rock Artist awards, poses in the press room during the 2015 Billboard Music Awards 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, winners of the Top Duo/Group and Top Touring Artist awards, poses in the press room during the 2015 Billboard Music Awards 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 Louis Tomlinson, Liam Payne, Niall Horan, and Harry Styles of One Direction, winners of the Top Duo/Group and Top Touring Artist awards, pose in the press room during the 2015 Billboard Music Awards 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 Louis Tomlinson, Liam Payne, Niall Horan, and Harry Styles of One Direction, winners of the Top Duo/Group and Top Touring Artist awards, pose in the press room during the 2015 Billboard Music Awards 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 Celine Dion poses in the press room during the 2015 Billboard Music Awards 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 Celine Dion poses in the press room during the 2015 Billboard Music Awards 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 Celine Dion poses in the press room during the 2015 Billboard Music Awards 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 Celine Dion poses in the press room during the 2015 Billboard Music Awards 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 Louis Tomlinson, Liam Payne, Niall Horan, and Harry Styles of One Direction, winners of the Top Duo/Group and Top Touring Artist awards, pose in the press room during the 2015 Billboard Music Awards 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 Louis Tomlinson, Liam Payne, Niall Horan, and Harry Styles of One Direction, winners of the Top Duo/Group and Top Touring Artist awards, pose in the press room during the 2015 Billboard Music Awards 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 poses in the press room with her eight Billboard Music Awards; Swift won Top Artist, Top Female Artist, Top Billboard 200 Artist, Top Billboard 200 Album for '1989,' Top Hot 100 Artist, Top Digital Songs Artist, Top Streaming Song (Video) for 'Shake It Off,' and Billboard Chart Achievement Award during the 2015 Billboard Music Awards 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 poses in the press room with her eight Billboard Music Awards; Swift won Top Artist, Top Female Artist, Top Billboard 200 Artist, Top Billboard 200 Album for '1989,' Top Hot 100 Artist, Top Digital Songs Artist, Top Streaming Song (Video) for 'Shake It Off,' and Billboard Chart Achievement Award during the 2015 Billboard Music Awards 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 poses in the press room with her eight Billboard Music Awards; Swift won Top Artist, Top Female Artist, Top Billboard 200 Artist, Top Billboard 200 Album for '1989,' Top Hot 100 Artist, Top Digital Songs Artist, Top Streaming Song (Video) for 'Shake It Off,' and Billboard Chart Achievement Award during the 2015 Billboard Music Awards 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, winner of Top Hot 100 Song and Top Digital Song for 'All About That Bass,' poses in the press room during the 2015 Billboard Music Awards 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, winner of the Top Radio Song and Top Streaming Song (Audio) awards for 'All of Me,' poses in the press room during the 2015 Billboard Music Awards 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, winner of the Top Radio Song and Top Streaming Song (Audio) awards for 'All of Me,' poses in the press room during the 2015 Billboard Music Awards 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, fashion detail, poses in the press room during the 2015 Billboard Music Awards 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 poses in the press room during the 2015 Billboard Music Awards 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, winner of Top Hot 100 Song and Top Digital Song for 'All About That Bass,' poses in the press room during the 2015 Billboard Music Awards 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, winner of Top Hot 100 Song and Top Digital Song for 'All About That Bass,' poses in the press room during the 2015 Billboard Music Awards 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 poses in the press room with her eight Billboard Music Awards; Swift won Top Artist, Top Female Artist, Top Billboard 200 Artist, Top Billboard 200 Album for '1989,' Top Hot 100 Artist, Top Digital Songs Artist, Top Streaming Song (Video) for 'Shake It Off,' and Billboard Chart Achievement Award during the 2015 Billboard Music Awards 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 poses in the press room with her eight Billboard Music Awards; Swift won Top Artist, Top Female Artist, Top Billboard 200 Artist, Top Billboard 200 Album for '1989,' Top Hot 100 Artist, Top Digital Songs Artist, Top Streaming Song (Video) for 'Shake It Off,' and Billboard Chart Achievement Award during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musicians Brian Kelley (L) and Tyler Hubbard of Florida Georgia Line, winners of Top Country Artist, pose in the press room during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: Musicians Brian Kelley (L) and Tyler Hubbard of Florida Georgia Line, winners of Top Country Artist, pose in the press room during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: DJ Calvin Harris, winner of Top Dance/Electronic Artist, poses in the press room during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: DJ Calvin Harris, winner of Top Dance/Electronic Artist, poses in the press room during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: DJ Calvin Harris, winner of Top Dance/Electronic Artist, poses in the press room during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: DJ Calvin Harris, winner of Top Dance/Electronic Artist, poses in the press room during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jason Merritt/Getty Images)
LAS VEGAS, NV - MAY 17: DJ David Guetta poses in the press room during the 2015 Billboard Music Awards 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 Tyrese Gibson poses in the press room during the 2015 Billboard Music Awards 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 Tyrese Gibson poses in the press room during the 2015 Billboard Music Awards 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 Tyrese Gibson poses in the press room during the 2015 Billboard Music Awards 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 Tyrese Gibson poses in the press room during the 2015 Billboard Music Awards 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, winner of the Top Rock Song (for 'Take Me to Church') and Top Rock Artist awards, poses in the press room during the 2015 Billboard Music Awards 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, winners of the Top Duo/Group and Top Touring Artist awards, poses in the press room during 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 - Press Room
