Singer Rachel Platten arrives at the 2016 Billboard Awards in Las Vegas, Nevada, U.S., May 22, 2016. (Photo by Steve Marcus/Reuters)





Singer Z LaLa arrives at the 2016 Billboard Awards in Las Vegas, Nevada, U.S., May 22, 2016. (Photo by Steve Marcus/Reuters)





The band Lukas Graham arrives at the 2016 Billboard Awards in Las Vegas, Nevada, U.S., May 22, 2016. (Photo by Steve Marcus/Reuters)





Presenter Lauren Elizabeth arrives at the 2016 Billboard Awards in Las Vegas, Nevada, U.S., May 22, 2016. (Photo by Steve Marcus/Reuters)





Singer Britney Spears arrives at the 2016 Billboard Awards in Las Vegas, Nevada, U.S., May 22, 2016. (Photo by Steve Marcus/Reuters)





Singer Britney Spears arrives at the 2016 Billboard Awards in Las Vegas, Nevada, U.S., May 22, 2016. (Photo by Steve Marcus/Reuters)





Actress Keke Palmer arrives at the 2016 Billboard Awards in Las Vegas, Nevada, U.S., May 22, 2016. (Photo by Steve Marcus/Reuters)





Actress Laverne Cox arrives at the 2016 Billboard Awards in Las Vegas, Nevada, U.S., May 22, 2016. (Photo by Steve Marcus/Reuters)





The group DNCE arrives at the 2016 Billboard Awards in Las Vegas, Nevada, U.S., May 22, 2016. (Photo by Steve Marcus/Reuters)





Actresses Kristen Bell (L), Kathryn Hahn and Mila Kunis (R) arrive at the 2016 Billboard Awards in Las Vegas, Nevada, U.S., May 22, 2016. (Photo by Steve Marcus/Reuters)





Actress Lucy Hale arrives at the 2016 Billboard Awards in Las Vegas, Nevada, U.S., May 22, 2016. (Photo by Steve Marcus/Reuters)





Actress Jessica Alba arrives at the 2016 Billboard Awards in Las Vegas, Nevada, U.S., May 22, 2016. (Photo by Steve Marcus/Reuters)





Singer Rihanna arrives at the 2016 Billboard Awards in Las Vegas, Nevada, U.S., May 22, 2016. (Photo by Steve Marcus/Reuters)





Actress Serayah McNeill poses backstage at the 2016 Billboard Awards in Las Vegas, Nevada, U.S., May 22, 2016. (Photo by Steve Marcus/Reuters)





Actress Keke Palmer poses backstage at the 2016 Billboard Awards in Las Vegas, Nevada, U.S., May 22, 2016. (Photo by Steve Marcus/Reuters)





Model Meredith Mickelson attends the 2016 Billboard Music Awards at T-Mobile Arena on May 22, 2016 in Las Vegas, Nevada. (Photo by David Becker/Getty Images)





TV personality Keltie Knight attends the 2016 Billboard Music Awards at T-Mobile Arena on May 22, 2016 in Las Vegas, Nevada. (Photo by David Becker/Getty Images)





TV personality Renee Bargh attends the 2016 Billboard Music Awards at T-Mobile Arena on May 22, 2016 in Las Vegas, Nevada. (Photo by David Becker/Getty Images)





Recording artist Rachel Platten attends the 2016 Billboard Music Awards at T-Mobile Arena on May 22, 2016 in Las Vegas, Nevada. (Photo by David Becker/Getty Images)





Singer Heather Russell attends the 2016 Billboard Music Awards at T-Mobile Arena on May 22, 2016 in Las Vegas, Nevada. (Photo by David Becker/Getty Images)





Internet personality Josh Ostrovsky aka “The Fat Jew” attends the 2016 Billboard Music Awards at T-Mobile Arena on May 22, 2016 in Las Vegas, Nevada. (Photo by David Becker/Getty Images)





Recording artist Z LaLa attends the 2016 Billboard Music Awards at T-Mobile Arena on May 22, 2016 in Las Vegas, Nevada. (Photo by David Becker/Getty Images)





TV personality Sibley Scoles attends the 2016 Billboard Music Awards at T-Mobile Arena on May 22, 2016 in Las Vegas, Nevada. (Photo by David Becker/Getty Images for dcp)





Recording artist Z LaLa attends the 2016 Billboard Music Awards at T-Mobile Arena on May 22, 2016 in Las Vegas, Nevada. (Photo by David Becker/Getty Images)





Singer Britney Spears attends the 2016 Billboard Music Awards at T-Mobile Arena on May 22, 2016 in Las Vegas, Nevada. (Photo by David Becker/Getty Images)





Singer Britney Spears attends the 2016 Billboard Music Awards at T-Mobile Arena on May 22, 2016 in Las Vegas, Nevada. (Photo by David Becker/Getty Images)





Musician Pete Wentz of 'Fall Out Boy' attends the 2016 Billboard Music Awards at T-Mobile Arena on May 22, 2016 in Las Vegas, Nevada. (Photo by David Becker/Getty Images)





TV personality JoJo Fletcher attends the 2016 Billboard Music Awards at T-Mobile Arena on May 22, 2016 in Las Vegas, Nevada. (Photo by David Becker/Getty Images)





Actress/singer Keke Palmer attends the 2016 Billboard Music Awards at T-Mobile Arena on May 22, 2016 in Las Vegas, Nevada. (Photo by David Becker/Getty Images)





Actress/singer Keke Palmer attends the 2016 Billboard Music Awards at T-Mobile Arena on May 22, 2016 in Las Vegas, Nevada. (Photo by David Becker/Getty Images)





Actress/recording artist Idina Menzel attends the 2016 Billboard Music Awards at T-Mobile Arena on May 22, 2016 in Las Vegas, Nevada. (Photo by David Becker/Getty Images)





Host/singer Ciara attends the 2016 Billboard Music Awards at T-Mobile Arena on May 22, 2016 in Las Vegas, Nevada. (Photo by David Becker/Getty Images)





Host/singer Ciara attends the 2016 Billboard Music Awards at T-Mobile Arena on May 22, 2016 in Las Vegas, Nevada. (Photo by David Becker/Getty Images)





Internet personality Grace Helbig attends the 2016 Billboard Music Awards at T-Mobile Arena on May 22, 2016 in Las Vegas, Nevada. (Photo by David Becker/Getty Images)





Co-host Ciara attends the 2016 Billboard Music Awards at T-Mobile Arena on May 22, 2016 in Las Vegas, Nevada. (Photo by David Becker/Getty Images)





Singer and host Ciara (R) and Russell Wilson attend the 2016 Billboard Music Awards at T-Mobile Arena on May 22, 2016 in Las Vegas, Nevada. (Photo by David Becker/Getty Images)





Singer Halsey attends the 2016 Billboard Music Awards at T-Mobile Arena on May 22, 2016 in Las Vegas, Nevada. (Photo by David Becker/Getty Images)





Singer Halsey attends the 2016 Billboard Music Awards at T-Mobile Arena on May 22, 2016 in Las Vegas, Nevada. (Photo by David Becker/Getty Images)





(L-R) Recording artists Ally Brooke, Normani Hamilton, Dinah-Jane Hansen, Lauren Jauregui and Camila Cabello of Fifth Harmony attend the 2016 Billboard Music Awards at T-Mobile Arena on May 22, 2016 in Las Vegas, Nevada. (Photo by David Becker/Getty Images)





Singer Demi Lovato attends the 2016 Billboard Music Awards at T-Mobile Arena on May 22, 2016 in Las Vegas, Nevada. (Photo by David Becker/Getty Images)





Recording artist Serayah attends the 2016 Billboard Music Awards at T-Mobile Arena on May 22, 2016 in Las Vegas, Nevada. (Photo by David Becker/Getty Images)





Actress Priyanka Chopra attends the 2016 Billboard Music Awards at T-Mobile Arena on May 22, 2016 in Las Vegas, Nevada. (Photo by David Becker/Getty Images)





Actress Priyanka Chopra, fashion detail, attends the 2016 Billboard Music Awards at T-Mobile Arena on May 22, 2016 in Las Vegas, Nevada. (Photo by David Becker/Getty Images)





Recording artist Tove Lo attends the 2016 Billboard Music Awards at T-Mobile Arena on May 22, 2016 in Las Vegas, Nevada. (Photo by David Becker/Getty Images)





Singer Laverne Cox attends the 2016 Billboard Music Awards at T-Mobile Arena on May 22, 2016 in Las Vegas, Nevada. (Photo by David Becker/Getty Images)





Singer Laverne Cox attends the 2016 Billboard Music Awards at T-Mobile Arena on May 22, 2016 in Las Vegas, Nevada. (Photo by David Becker/Getty Images)





(L-R) Actresses Kristen Bell, Kathryn Hahn and Mila Kunis attend the 2016 Billboard Music Awards at T-Mobile Arena on May 22, 2016 in Las Vegas, Nevada. (Photo by David Becker/Getty Images)





(L-R) Musicians Jack Lawless, JinJoo Lee, Joe Jonas and Cole Whittle of DNCEattends the 2016 Billboard Music Awards at T-Mobile Arena on May 22, 2016 in Las Vegas, Nevada. (Photo by David Becker/Getty Images)





Recording artist Normani Hamilton of Fifth Harmony attends the 2016 Billboard Music Awards at T-Mobile Arena on May 22, 2016 in Las Vegas, Nevada. (Photo by David Becker/Getty Images)





Singer Kesha attends the 2016 Billboard Music Awards at T-Mobile Arena on May 22, 2016 in Las Vegas, Nevada. (Photo by David Becker/Getty Images)





Singer Ariana Grande attends the 2016 Billboard Music Awards at T-Mobile Arena on May 22, 2016 in Las Vegas, Nevada. (Photo by David Becker/Getty Images)





Actress Kate Beckinsale attends the 2016 Billboard Music Awards at T-Mobile Arena on May 22, 2016 in Las Vegas, Nevada. (Photo by David Becker/Getty Images for dcp)





Singer Steven Tyler attends the 2016 Billboard Music Awards at T-Mobile Arena on May 22, 2016 in Las Vegas, Nevada. (Photo by David Becker/Getty Images)





Singer Rihanna attends the 2016 Billboard Music Awards at T-Mobile Arena on May 22, 2016 in Las Vegas, Nevada. (Photo by David Becker/Getty Images)





Actress/model Rebecca Romijn attends the 2016 Billboard Music Awards at T-Mobile Arena on May 22, 2016 in Las Vegas, Nevada. (Photo by David Becker/Getty Images)





Actress Jessica Alba attends the 2016 Billboard Music Awards at T-Mobile Arena on May 22, 2016 in Las Vegas, Nevada. (Photo by David Becker/Getty Images)





Actress/recording artist Zendaya attends the 2016 Billboard Music Awards at T-Mobile Arena on May 22, 2016 in Las Vegas, Nevada. (Photo by David Becker/Getty Images)