2015 Billboard Music Awards in photos

Taylor Swift accepts the award for top artist at the Billboard Music Awards at the MGM Grand Garden Arena on Sunday, May 17, 2015, in Las Vegas. AP

Wiz Khalifa performs at the Billboard Music Awards at the MGM Grand Garden Arena on Sunday, May 17, 2015, in Las Vegas. AP

Nicki Minaj performs at the Billboard Music Awards at the MGM Grand Garden Arena on Sunday, May 17, 2015, in Las Vegas. AP

Ed Sheeran arrives at the Billboard Music Awards at the MGM Grand Garden Arena on Sunday, May 17, 2015, in Las Vegas. AP

Charlie Puth, from left, Wiz Khalifa, and Lindsey Stirling perform at the Billboard Music Awards at the MGM Grand Garden Arena on Sunday, May 17, 2015, in Las Vegas. AP

A guitar appears on stage in tribute to B.B. King at the Billboard Music Awards at the MGM Grand Garden Arena on Sunday, May 17, 2015, in Las Vegas. AP

Pitbull, left, and Chris Brown perform at the Billboard Music Awards at the MGM Grand Garden Arena on Sunday, May 17, 2015, in Las Vegas. AP

Nick Jonas performs at the Billboard Music Awards at the MGM Grand Garden Arena on Sunday, May 17, 2015, in Las Vegas. AP

Mariah Carey performs at the Billboard Music Awards at the MGM Grand Garden Arena on Sunday, May 17, 2015, in Las Vegas. AP

Kelly Clarkson performs at the Billboard Music Awards at the MGM Grand Garden Arena on Sunday, May 17, 2015, in Las Vegas. AP

Louis Tomlinson, from left, Liam Payne, Niall Horan, and Harry Styles of the musical group One Direction pose in the press room with the awards for top duo/group and top touring artist at the Billboard Music Awards at the MGM Grand Garden Arena on Sunday, May 17, 2015, in Las Vegas. AP

John Legend poses in the press room with the awards for top radio song for “All of Me” and top streaming song for “All of Me” at the Billboard Music Awards at the MGM Grand Garden Arena on Sunday, May 17, 2015, in Las Vegas. AP

Jennifer Lopez arrives at the Billboard Music Awards at the MGM Grand Garden Arena on Sunday, May 17, 2015, in Las Vegas. AP

Dencia arrives at the Billboard Music Awards at the MGM Grand Garden Arena on Sunday, May 17, 2015, in Las Vegas. AP

Celine Dion presents the award for top male artist at the Billboard Music Awards at the MGM Grand Garden Arena on Sunday, May 17, 2015, in Las Vegas. AP

The musical group Simple Minds, from left, Mel Gaynor, Andrew Gillespie, Catherine Davies, Charlie Burchill, James Kerr, Sarah Brown, and Gerard Grimes, arrive at the Billboard Music Awards at the MGM Grand Garden Arena on Sunday, May 17, 2015, in Las Vegas. AP

Idina Menzel arrives at the Billboard Music Awards at the MGM Grand Garden Arena on Sunday, May 17, 2015, in Las Vegas. AP

50 Cent arrives at the Billboard Music Awards at the MGM Grand Garden Arena on Sunday, May 17, 2015, in Las Vegas. AP

Britney Spears arrives at the Billboard Music Awards at the MGM Grand Garden Arena on Sunday, May 17, 2015, in Las Vegas. AP

Olivia Culpo, left, and Nick Jonas arrive at the Billboard Music Awards at the MGM Grand Garden Arena on Sunday, May 17, 2015, in Las Vegas. AP

Hosts Chrissy Teigen, left, and Ludacris speak at the Billboard Music Awards at the MGM Grand Garden Arena on Sunday, May 17, 2015, in Las Vegas. AP

Iggy Azalea, left, and Charli XCX accept the award for top rap song for “Fancy” at the Billboard Music Awards at the MGM Grand Garden Arena on Sunday, May 17, 2015, in Las Vegas. AP

Tyrese, left, and host Ludacris introduce a performance by Wiz Khalifa, Charlie Puth, and Lindsey Stirling at the Billboard Music Awards at the MGM Grand Garden Arena on Sunday, May 17, 2015, in Las Vegas. AP

Ellen Pompeo presents the award for top female artist at the Billboard Music Awards at the MGM Grand Garden Arena on Sunday, May 17, 2015, in Las Vegas. AP

Tyrese poses in the press room at the Billboard Music Awards at the MGM Grand Garden Arena on Sunday, May 17, 2015, in Las Vegas. AP

Calvin Harris poses in the press room with the award for top dance/electronic artist at the Billboard Music Awards at the MGM Grand Garden Arena on Sunday, May 17, 2015, in Las Vegas. AP

Pitbull, left, and Chris Brown perform at the Billboard Music Awards at the MGM Grand Garden Arena on Sunday, May 17, 2015, in Las Vegas. AP

50 Cent, left, and Rita Ora present the award for top hot 100 song at the Billboard Music Awards at the MGM Grand Garden Arena on Sunday, May 17, 2015, in Las Vegas. AP

Chris Brown performs at the Billboard Music Awards at the MGM Grand Garden Arena on Sunday, May 17, 2015, in Las Vegas. AP

Tori Kelly performs at the Billboard Music Awards at the MGM Grand Garden Arena on Sunday, May 17, 2015, in Las Vegas. AP

Ed Sheeran performs at the Billboard Music Awards at the MGM Grand Garden Arena on Sunday, May 17, 2015, in Las Vegas. AP

Kendall Jenner arrives at the Billboard Music Awards at the MGM Grand Garden Arena on Sunday, May 17, 2015, in Las Vegas. AP

Prince Royce arrives at the Billboard Music Awards at the MGM Grand Garden Arena on Sunday, May 17, 2015, in Las Vegas. AP

Ludacris arrives at the Billboard Music Awards at the MGM Grand Garden Arena on Sunday, May 17, 2015, in Las Vegas. AP

David Guetta poses in the press room at the Billboard Music Awards at the MGM Grand Garden Arena on Sunday, May 17, 2015, in Las Vegas. AP

Ben McKee, from left, Daniel Reynolds, Daniel Sermon, and Daniel Platzman of Imagine Dragons perform at the Billboard Music Awards at the MGM Grand Garden Arena on Sunday, May 17, 2015, in Las Vegas. AP

Taylor Swift poses in the press room with the awards for top Billboard 200 album for “1989”, top female artist, chart achievement, top artist, top Billboard 200 artist, top hot 100 artist, top digital song artist, and top streaming song (video) for “Shake It Off” at the Billboard Music Awards at the MGM Grand Garden Arena on Sunday, May 17, 2015, in Las Vegas. AP

Meghan Trainor poses in the press room with the awards for top hot 100 song for “All About That Bass” and top digital song for “All About That Bass” at the Billboard Music Awards at the MGM Grand Garden Arena on Sunday, May 17, 2015, in Las Vegas. AP

Kanye West performs at the Billboard Music Awards at the MGM Grand Garden Arena on Sunday, May 17, 2015, in Las Vegas. AP