Katy Perry performs on stage at the American Music Awards at the Nokia Theatre L.A. Live on Nov. 24, 2013, in Los Angeles.
Pitbull
Host Pitbull speaks on stage at the American Music Awards at the Nokia Theatre L.A. Live on Nov. 24, 2013, in Los Angeles.
Justin Timberlake
Justin Timberlake accepts the award for favorite male artist - pop/rock at the American Music Awards at the Nokia Theatre L.A. Live on Nov. 24, 2013, in Los Angeles.
Chris Daughtry and Kristen Bell
Chris Daughtry and Kristen Bell speak onstage during the 2013 American Music Awards at Nokia Theatre L.A. Live on Nov. 24, 2013, in Los Angeles.
Taylor Swift
Taylor Swift accepts the favorite country album award for "Red" onstage during the 2013 American Music Awards at Nokia Theatre L.A. Live on Nov. 24, 2013, in Los Angeles.
Imagine Dragons
Dan Reynolds of Imagine Dragons performs onstage during the 2013 American Music Awards at Nokia Theatre L.A. Live on Nov. 24, 2013, in Los Angeles.
Rihanna
Rihanna accepts the favorite soul/R&B female artist award onstage during the 2013 American Music Awards at Nokia Theatre L.A. Live on Nov. 24, 2013, in Los Angeles.
Ariana Grande
Singer Ariana Grande performs during the 2013 American Music Awards at Nokia Theatre L.A. Live on Nov. 24, 2013, in Los Angeles.
Emma Roberts
Emma Roberts speaks onstage during the 2013 American Music Awards at Nokia Theatre L.A. Live on Nov. 24, 2013, in Los Angeles.
One Direction
From left, singers Zayn Malik, Liam Payne, Harry Styles, Louis Tomlinson, and Niall Horan of One Direction perform onstage during the 2013 American Music Awards at Nokia Theatre L.A. Live on Nov. 24, 2013, in Los Angeles.
Naya Rivera and Maia Mitchell
Naya Rivera, left, and Maia Mitchell speak onstage during the 2013 American Music Awards at Nokia Theatre L.A. Live on Nov. 24, 2013, in Los Angeles.
Ke$ha and Pitbull
Ke$ha, left, and Pitbull perform onstage during the 2013 American Music Awards at Nokia Theatre L.A. Live on Nov. 24, 2013, in Los Angeles.
Akon and Michael Bolton
Akon, left, and Michael Bolton speak onstage during the 2013 American Music Awards at Nokia Theatre L.A. Live on Nov. 24, 2013, in Los Angeles.
Justin Timberlake
Justin Timberlake performs onstage during the 2013 American Music Awards at Nokia Theatre L.A. Live on Nov. 24, 2013, in Los Angeles.
Marc Anthony
Marc Anthony accepts the favorite Latin artist award onstage during the 2013 American Music Awards at Nokia Theatre L.A. Live on Nov. 24, 2013, in Los Angeles.
Joan Jett and Dave Grohl
Joan Jett and Dave Grohl speak onstage during the 2013 American Music Awards at Nokia Theatre L.A. Live on Nov. 24, 2013, in Los Angeles.
Imagine Dragons
Dan Reynolds, from left, Ben Mckee, and Wayne Sermon of the musical group Imagine Dragons, accept the award for favorite artist - alternative rock at the American Music Awards at the Nokia Theatre L.A. Live on Nov. 24, 2013, in Los Angeles.
Macklemore and Ryan Lewis
Macklemore, right, and Ryan Lewis accept the award for favorite album - rap/hip-hop for "The Heist" via satellite from Miami during the American Music Awards at the Nokia Theatre L.A. Live on Nov. 24, 2013, in Los Angeles.
Heidi Klum
Heidi Klum speaks onstage during the 2013 American Music Awards at Nokia Theatre L.A. Live on Nov. 24, 2013, in Los Angeles.
Kelly Osbourne and Nicole Richie
Kelly Osbourne and Nicole Richie speak onstage during the 2013 American Music Awards at Nokia Theatre L.A. Live on Nov. 24, 2013, in Los Angeles.
One Direction
From left, Niall Horan, Zayn Malik, Liam Payne, Louis Tomlinson, and Harry Styles of One Direction accept the favorite pop/rock album award for "Take Me Home" onstage during the 2013 American Music Awards at Nokia Theatre L.A. Live on Nov. 24, 2013 in Los Angeles.
Juan Pablo Galavis and Daisy Fuentes
Juan Pablo Galavis, left, and Daisy Fuentes present the award for new artist of the year at the American Music Awards at the Nokia Theatre L.A. Live on Sunday, Nov. 24, 2013, in Los Angeles.
Sarah Silverman
Sarah Silverman speaks onstage during the 2013 American Music Awards at Nokia Theatre L.A. Live on Nov. 24, 2013, in Los Angeles.
Justin Timberlake
Justin Timberlake accepts the award for favorite male artist - soul/R&B at the American Music Awards at the Nokia Theatre L.A. Live on Nov. 24, 2013, in Los Angeles.
Rihanna
Monica Braithwaite, right, presents the Icon Award to her daughter Rihanna on stage at the American Music Awards at the Nokia Theatre L.A. Live on Nov. 24, 2013, in Los Angeles.
Rihanna
Rihanna performs during the 2013 American Music Awards at Nokia Theatre L.A. Live on Nov. 24, 2013, in Los Angeles.
Paulina Gretzky and Ciara
Paulina Gretzky, left, and Ciara speak on stage at the American Music Awards at the Nokia Theatre L.A. Live on Nov. 24, 2013, in Los Angeles.
Fall Out Boy
From left, Andy Hurley, Joe Trohman, Patrick Stump, and Pete Wentz of the musical group Fall Out Boy present the award for favorite female artist - country at the American Music Awards at the Nokia Theatre L.A. Live on Nov. 24, 2013, in Los Angeles.
Jennifer Lopez
Jennifer Lopez performs onstage during the 2013 American Music Awards at Nokia Theatre L.A. Live on Nov. 24, 2013, in Los Angele.
Jennifer Lopez
Jennifer Lopez performs onstage during the 2013 American Music Awards at Nokia Theatre L.A. Live on Nov. 24, 2013, in Los Angeles.
Jennifer Hudson
Jennifer Hudson speaks onstage during the 2013 American Music Awards at Nokia Theatre L.A. Live on Nov. 24, 2013, in Los Angeles.
A Great Big World and Christina Aguilera
Musician Ian Axel of A Great Big World, left, and singer Christina Aguilera perform onstage during the 2013 American Music Awards at Nokia Theatre L.A. Live on Nov. 24, 2013, in Los Angeles.
Austin Mahone and Kendall Jenner
Austin Mahone and Kendall Jenner speak onstage during the 2013 American Music Awards at Nokia Theatre L.A. Live on Nov. 24, 2013, in Los Angeles.
Luke Bryan
Luke Bryan accepts the Favorite Country Male Artist award onstage during the 2013 American Music Awards at Nokia Theatre L.A. Live on Nov. 24, 2013, in Los Angeles.
Jeremy Renner
Jeremy Renner speaks onstage during the 2013 American Music Awards at Nokia Theatre L.A. Live on Nov. 24, 2013, in Los Angeles.
Nathan Fillion and Alicia Silverstone
Nathan Fillion, left, and Alicia Silverstone present the award for single of the year at the American Music Awards at the Nokia Theatre L.A. Live on Nov. 24, 2013, in Los Angeles.
Florida Georgia Line and Nelly
From right, Tyler Hubbard and Brian Kelley of the musical group Florida Georgia Line, and Nelly accept the award for single of the year for "Cruise" at the American Music Awards at the Nokia Theatre L.A. Live on Nov. 24, 2013, in Los Angeles.
R. Kelly and Lady Gaga
R. Kelly and Lady Gaga perform onstage during the 2013 American Music Awards at Nokia Theatre L.A. Live on Nov. 24, 2013, in Los Angeles.
Lil Mama, Chilli and T-Boz
From right, Chilli and T-Boz of the musical group TLC perform with Lil Mama on stage at the American Music Awards at the Nokia Theatre L.A. Live on Nov. 24, 2013, in Los Angeles.
Miley Cyrus
Miley Cyrus performs on stage at the American Music Awards at the Nokia Theatre L.A. Live on Nov. 24, 2013, in Los Angeles.
Taylor Swift
Taylor Swift accepts the award for artist of the year at the American Music Awards at the Nokia Theatre L.A. Live on Nov. 24, 2013, in Los Angeles.