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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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$ha and Pitbull
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Ke$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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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.