

Getty Images
Carrie Underwood attends the 2015 American Music Awards at Microsoft Theater in Los Angeles.

Getty Images
Demi Lovato attends the 2015 American Music Awards at Microsoft Theater in Los Angeles.

Getty Images
One Direction members Liam Payne, Louis Tomlinson, Niall Horan and Harry Styles attend the 2015 American Music Awards at Microsoft Theater in Los Angeles.

Getty Images
Ciara attends attends the 2015 American Music Awards at L.A.'s Microsoft Theater.

Getty Images
Justin Bieber attends the 2015 American Music Awards at L.A.'s Microsoft Theater.

Getty Images
Singer and actress Selena Gomez attends the 2015 American Music Awards at L.A.'s Microsoft Theater.

Getty Images
Actress Bailee Madison attends the 2015 American Music Awards at L.A.'s Microsoft Theater.

Getty Images
Actor and singer Nick Jonas attends the 2015 American Music Awards at L.A.'s Microsoft Theater.

Getty Images
Model Gigi Hadid attends the 2015 American Music Awards at Microsoft Theater in Los Angeles.

Getty Images
Actress Rebel Wilson attends the 2015 American Music Awards at L.A.'s Microsoft Theater.

Getty Images
Singer Meghan Trainor attends the 2015 American Music Awards at L.A.'s Microsoft Theater.

Getty Images
Skrillex and Diplo attend the 2015 American Music Awards at Microsoft Theater in Los Angeles.

Getty Images
Zendaya attends the 2015 American Music Awards at Microsoft Theater.

Getty Images
Shawn Mendes attends the 2015 American Music Awards at L.A.'s Microsoft Theater.

Getty Images
Actress Nina Dobrev attends the 2015 American Music Awards at L.A.'s Microsoft Theater.

Getty Images
Actress and dancer Julianne Hough attends the 2015 American Music Awards at L.A.'s Microsoft Theater.

Getty Images
Michael Clifford, Calum Hood, Luke Hemmings and Ashton Irwin of 5 Seconds of Summer attend the 2015 American Music Awards at L.A.'s Microsoft Theater.

Getty Images
Paula Abdul attends the 2015 American Music Awards at L.A.'s Microsoft Theater.

Getty Images
Pete Wentz, Andy Hurley and Joe Trohman of Fall Out Boy attend the 2015 American Music Awards at Microsoft Theater.

Getty Images
Singer Charlie Puth attends the 2015 American Music Awards at L.A.'s Microsoft Theater.

Getty Images
E! host Giuliana Rancic attends the 2015 American Music Awards at L.A.'s Microsoft Theater.

Getty Images
Reality TV star Frankie Grande attends the 2015 American Music Awards at L.A.'s Microsoft Theater.

Getty Images
Jenny McCarthy and Donnie Wahlberg attend the 2015 American Music Awards at L.A.'s Microsoft Theater.

Getty Images
Singer Z La La attends the 2015 American Music Awards at L.A.'s Microsoft Theater.

Getty Images
Tyga attends the 2015 American Music Awards at L.A.'s Microsoft Theater.