AMAs 2012: Show highlights

Singer Carly Rae Jepsen performs onstage during the 40th American Music Awards held at Nokia Theatre L.A. Live on Nov. 18, 2012, in Los Angeles.

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Singer Usher performs onstage during the 40th American Music Awards held at Nokia Theatre L.A. Live on Nov. 18, 2012, in Los Angeles.

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Singer Justin Bieber accepts the Favorite Pop/Rock Male Artist award onstage during the 40th American Music Awards held at Nokia Theatre L.A. Live on Nov. 18, 2012, in Los Angeles.

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Presenter Eric Stonestreet speaks onstage during the 40th American Music Awards held at Nokia Theatre L.A. Live on Nov. 18, 2012, in Los Angeles.

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Presenter Ryan Seacrest speaks onstage during the 40th American Music Awards held at Nokia Theatre L.A. Live on Nov. 18, 2012, in Los Angeles.

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Singer Siva Kaneswaran of The Wanted performs onstage during the 40th American Music Awards held at Nokia Theatre L.A. Live on Nov. 18, 2012, in Los Angeles.

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Singer Carly Rae Jepsen performs onstage during the 40th American Music Awards held at Nokia Theatre L.A. Live on Nov. 18, 2012, in Los Angeles.

Pictures: AMAs red carpet

Singer Max George of The Wanted performs onstage during the 40th American Music Awards held at Nokia Theatre L.A. Live on Nov. 18, 2012, in Los Angeles.

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Singer Nathan Sykes of The Wanted performs onstage during the 40th American Music Awards held at Nokia Theatre L.A. Live on Nov. 18, 2012, in Los Angeles.

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Singer Taylor Swift accepts the Favorite Country Female Artist award onstage during the 40th American Music Awards held at Nokia Theatre L.A. Live on Nov. 18, 2012, in Los Angeles.

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Presenters Lucy Hale and Phillip Phillips speak onstage during the 40th American Music Awards held at Nokia Theatre L.A. Live on Nov. 18, 2012, in Los Angeles.

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Singer Kesha performs onstage during the 40th American Music Awards held at Nokia Theatre L.A. Live on Nov. 18, 2012, in Los Angeles.

Pictures: AMAs red carpet

Rapper/singer Nicki Minaj accepts the award for Favorite Rap/Hip-Hop Album onstage during the 40th American Music Awards held at Nokia Theatre L.A. Live on Nov. 18, 2012, in Los Angeles.

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Singer Kelly Clarkson performs onstage during the 40th American Music Awards held at Nokia Theatre L.A. Live on Nov. 18, 2012, in Los Angeles.

Pictures: AMAs red carpet

Presenters Stacy Keibler and Ne-Yo speak onstage during the 40th American Music Awards held at Nokia Theatre L.A. Live on Nov. 18, 2012, in Los Angeles.

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Singer Kelly Clarkson performs onstage during the 40th American Music Awards held at Nokia Theatre L.A. Live on Nov. 18, 2012, in Los Angeles.

Pictures: AMAs red carpet

Singer Gwen Stefani of No Doubt performs onstage during the 40th American Music Awards held at Nokia Theatre L.A. Live on Nov. 18, 2012, in Los Angeles.

Pictures: AMAs red carpet

Singer Taylor Swift performs onstage during the 40th American Music Awards held at Nokia Theatre L.A. Live on Nov. 18, 2012, in Los Angeles.

Pictures: AMAs red carpet

Singer Usher accepts the award for Favorite Soul/R&B Male Artist onstage during the 40th American Music Awards held at Nokia Theatre L.A. Live on Nov. 18, 2012, in Los Angeles.

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Presenters Amy Heidemann and Nick Noonan of Karmin of speak onstage during the 40th American Music Awards held at Nokia Theatre L.A. Live on Nov. 18, 2012, in Los Angeles.

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Presenters Apolo Ohno and Kerry Washington speak onstage during the 40th American Music Awards held at Nokia Theatre L.A. Live on Nov. 18, 2012, in Los Angeles.

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Presenters Jennifer Morrison and Ginnifer Goodwin speak onstage during the 40th American Music Awards held at Nokia Theatre L.A. Live on Nov. 18, 2012, in Los Angeles.

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Rapper/singer Nicki Minaj performs onstage during the 40th American Music Awards held at Nokia Theatre L.A. Live on Nov. 18, 2012, in Los Angeles.

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Singer Chester Bennington of Linkin Park performs onstage during the 40th American Music Awards held at Nokia Theatre L.A. Live on Nov. 18, 2012, in Los Angeles.

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Rapper/singer Nicki Minaj performs onstage during the 40th American Music Awards held at Nokia Theatre L.A. Live on Nov. 18, 2012, in Los Angeles.

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Singer Carly Rae Jepsen accepts the award for Old Navy New Artist of the Year onstage during the 40th American Music Awards held at Nokia Theatre L.A. Live on Nov. 18, 2012, in Los Angeles.

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Singer Pink performs onstage during the 40th American Music Awards held at Nokia Theatre L.A. Live on Nov. 18, 2012, in Los Angeles.

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From left to right, presenters Nick Carter, Howie Dorough, Brian Littrell, Kevin Richardson and AJ McLean of Backstreet Boys speak onstage during the 40th American Music Awards held at Nokia Theatre L.A. Live on Nov. 18, 2012, in Los Angeles.

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Presenter Heidi Klum speaks onstage during the 40th American Music Awards held at Nokia Theatre L.A. Live on Nov. 18, 2012, in Los Angeles.

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Singer Luke Bryan accepts the award for Favorite Country Male Artist onstage during the 40th American Music Awards held at Nokia Theatre L.A. Live on Nov. 18, 2012, in Los Angeles.

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Singer Justin Bieber performs onstage during the 40th American Music Awards held at Nokia Theatre L.A. Live on Nov. 18, 2012, in Los Angeles.

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From left to right, presenters Kelly Rowland and Elisha Cuthbert speak onstage during the 40th American Music Awards held at Nokia Theatre L.A. Live on Nov. 18, 2012, in Los Angeles.

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From left to right presenters Charles Kelley, Hillary Scott and Dave Haywood of Lady Antebellum speak onstage during the 40th American Music Awards held at Nokia Theatre L.A. Live on Nov. 18, 2012, in Los Angeles.

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Singer Christina Aguilera performs onstage during the 40th American Music Awards held at Nokia Theatre L.A. Live on Nov. 18, 2012, in Los Angeles.

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Presenters Gavin DeGraw and Colbie Caillat speak onstage during the 40th American Music Awards held at Nokia Theatre L.A. Live on Nov. 18, 2012, in Los Angeles.

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Singer Carrie Underwood performs onstage during the 40th American Music Awards held at Nokia Theatre L.A. Live on Nov. 18, 2012, in Los Angeles.

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Singer Justin Bieber accepts the award for Favorite Pop/Rock Album from Jenny McCarthy onstage during the 40th American Music Awards held at Nokia Theatre L.A. Live on Nov. 18, 2012, in Los Angeles.

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Recording artist Pitbull performs onstage during the 40th American Music Awards held at Nokia Theatre L.A. Live on Nov. 18, 2012, in Los Angeles.

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Singer Chris Brown and rapper Ludacris perform onstage during the 40th American Music Awards held at Nokia Theatre L.A. Live on Nov. 18, 2012, in Los Angeles.

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Presenters Curtis "50 cent" Jackson and Hayden Panettiere speak onstage during the 40th American Music Awards held at Nokia Theatre L.A. Live on Nov. 18, 2012, in Los Angeles.

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Singer Carrie Underwood accepts the award for Favorite Country Music Album onstage during the 40th American Music Awards held at Nokia Theatre L.A. Live on Nov. 18, 2012, in Los Angeles.

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Singer Justin Bieber accepts the award for Artist of the Year with his mom, Pattie Malette, onstage during the 40th American Music Awards held at Nokia Theatre L.A. Live on Nov. 18, 2012, in Los Angeles.

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MC Hammer and singer PSY perform onstage during the 40th American Music Awards held at Nokia Theatre L.A. Live on Nov. 18, 2012, in Los Angeles.

Pictures: AMAs red carpet