Katy Perry's new album, Prism, is out now. Cass Bird/Courtesy of the artist hide caption

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Katy Perry On The 180 That Saved Her Career

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Painter Will Cotton, known for his lush, dreamlike candy landscapes, was the art director for Katy Perry's "California Gurls" music video. He also created the cover art for the album. Will Cotton / EMI Music hide caption

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Katy Perry: A 'Teenage Dream,' An Artistic Musician

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Beyonce as her onstage alter ego Sasha Fierce at the MTV Video Music Awards in 2009. Christopher Polk / Getty Images hide caption

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Pop Personae: Why Do Some Women Perform In Character?

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Katy Perry (left) and Snoop Dogg perform at the 2010 MTV Movie Awards in June. Christopher Polk/Getty Images hide caption

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Pop Off: He Raps, She Sings. Does It Still Count As A Duet?

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Pop Goes The World

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