Taylor Swift poses backstage with her awardsduring the 2015 Billboard Music Awards in Las Vegas, Nevada May 17, 2015. Photo: ReutersBrian Kelley and Tyler Hubbard of Florida Georgia Line pose backstage with their award for Top Country Artist during the 2015 Billboard Music Awards in Las Vegas, Nevada May 17, 2015. Photo: ReutersTayor Swift accepts the award for top artist at the 2015 Billboard Music Awards in Las Vegas, Nevada May 17, 2015. Photo: ReutersMusician Calvin Harris poses backstage with his award for Top Dance/Electronic Artist during the 2015 Billboard Music Awards in Las Vegas, Nevada May 17, 2015. Photo: ReutersOne Direction accepts the award for top touring artist at the 2015 Billboard Music Awards in Las Vegas, Nevada May 17, 2015. Photo: ReutersCeline Dion takes the stage to present the award for top male artist at the 2015 Billboard Music Awards in Las Vegas, Nevada May 17, 2015. Photo: ReutersZendaya attends the 2015 Billboard Music Awards, May 17, 2015, at the MGM Grand Garden Arena in Las Vegas, Nevada. Photo: AFPRDavid Lee Roth attends the 2015 Billboard Music Awards, May 17, 2015, at the MGM Grand Garden Arena in Las Vegas, Nevada. Photo: AFPRDavid Lee Roth attends the 2015 Billboard Music Awards, May 17, 2015, at the MGM Grand Garden Arena in Las Vegas, Nevada. Photo: AFPREd Sheeran attends the 2015 Billboard Music Awards, May 17, 2015, at the MGM Grand Garden Arena in Las Vegas, Nevada. Photo: AFPRKendall Jenner attends the 2015 Billboard Music Awards, May 17, 2015, at the MGM Grand Garden Arena in Las Vegas, Nevada. Photo: AFPRKylie Jenner attends the 2015 Billboard Music Awards, May 17, 2015, at the MGM Grand Garden Arena in Las Vegas, Nevada.Photo: AFPRWiz Khalifa attends the 2015 Billboard Music Awards, May 17, 2015, at the MGM Grand Garden Arena in Las Vegas, Nevada. Photo: AFPR
