MTV VMAs 2012 red carpet

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  Singers Liam Payne, Louis Tomlinson, Niall Horan, Zayn Malik and Harry Styles of One Direction arrive at the 2012 MTV Video Music Awards at Staples Center on September 6, 2012 in Los Angeles, California. Christopher Polk / Getty Images

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  Singer Rihanna arrives at the 2012 MTV Video Music Awards at Staples Center on September 6, 2012 in Los Angeles, California. Frederick M. Brown / Getty Images

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  Rapper Wiz Khalifa and model Amber Rose arrive at the 2012 MTV Video Music Awards at Staples Center on September 6, 2012 in Los Angeles, California. Frederick M. Brown / Getty Images

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  South Korean rapper PSY arrives at the MTV Video Music Awards on Thursday, Sept. 6, 2012, in Los Angeles. Matt Sayles / INVISION/AP

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  Pink, left, and Carey Hart arrive at the MTV Video Music Awards on Thursday, Sept. 6, 2012, in Los Angeles. Matt Sayles / INVISION/AP

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  Bonnie McKee arrives at the MTV Video Music Awards on Thursday, Sept. 6, 2012, in Los Angeles. Matt Sayles / INVISION/AP

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  Singer Tom Petty, center, Dana York, right, and Adria Petty arrive at the MTV Video Music Awards on Thursday, Sept. 6, 2012, in Los Angeles. Matt Sayles / INVISION/AP

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  Cast members from MTV's "Jersey Shore," from left, Ronnie Ortiz-Magro, Samantha Giancola, Vinny Guadagnino, Deena Nicole Cortese and Paul DelVecchio arrive at the MTV Video Music Awards on Thursday, Sept. 6, 2012, in Los Angeles. Jordan Strauss / INVISION/AP

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  Singer-actress Miley Cyrus attends the MTV Video Music Awards on Thursday, Sept. 6, 2012, in Los Angeles. Jordan Strauss / INVISION/AP

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  Olympic swimmer Missy Franklin arrives at the MTV Video Music Awards on Thursday, Sept. 6, 2012, in Los Angeles. Matt Sayles / INVISION/AP

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  Amber Rose arrives at the MTV Video Music Awards on Thursday, Sept. 6, 2012, in Los Angeles. Jordan Strauss / INVISION/AP

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  Rihanna arrives at the MTV Video Music Awards on Thursday, Sept. 6, 2012, in Los Angeles. Matt Sayles / INVISION/AP

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  Actress Zoe Saldana arrives at the MTV Video Music Awards on Thursday, Sept. 6, 2012, in Los Angeles. Jordan Strauss / INVISION/AP

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  Ne-Yo arrives at the MTV Video Music Awards on Thursday, Sept. 6, 2012, in Los Angeles. Jordan Strauss / INVISION/AP

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  Ke$ha attends the MTV Video Music Awards on Thursday, Sept. 6, 2012, in Los Angeles. Jordan Strauss / INVISION/AP

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  Musician Alicia Keys arrives at the 2012 MTV Video Music Awards at Staples Center on September 6, 2012 in Los Angeles, California. Frederick M. Brown / Getty Images

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  Musician Regina Spektor arrives at the 2012 MTV Video Music Awards at Staples Center on September 6, 2012 in Los Angeles, California. Frederick M. Brown / Getty Images

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  Singer Taylor Swift arrives at the 2012 MTV Video Music Awards at Staples Center on September 6, 2012 in Los Angeles, California. Frederick M. Brown / Getty Images

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  Musicians Tre Cool, Billie Joe Armstrong and Mike Dirnt of Green Day arrive at the 2012 MTV Video Music Awards at Staples Center on September 6, 2012 in Los Angeles, California. Frederick M. Brown / Getty Images

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  Rapper/singer Nicki Minaj arrives at the 2012 MTV Video Music Awards at Staples Center on September 6, 2012 in Los Angeles, California. Frederick M. Brown / Getty Images

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  Actress Emma Watson arrives at the 2012 MTV Video Music Awards at Staples Center on September 6, 2012 in Los Angeles, California. Frederick M. Brown / Getty Images

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  Olympic gymnast Gabrielle Douglas attends the MTV Video Music Awards on Thursday, Sept. 6, 2012, in Los Angeles. Jordan Strauss / INVISION/AP

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  Singer Katy Perry arrives at the 2012 MTV Video Music Awards at Staples Center on September 6, 2012 in Los Angeles, California. Frederick M. Brown / Getty Images