LAS VEGAS, NV - MAY 17: Singer Taylor Swift (L) embraces DJ Calvin Harris after winning the Top Artist award at the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jeff Kravitz/BMA2015/FilmMagic)
LAS VEGAS, NV - MAY 17: Singer Taylor Swift (L) embraces DJ Calvin Harris after winning the Top Artist award at the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Jeff Kravitz/BMA2015/FilmMagic)