Hey, trend trackers!

Check out what guests at the 2009 American Music Awards rocked on the red carpet.

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Rihanna

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Selena Gomez

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Shakira

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Keri Hilson

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Kristen Bell

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Kelly Clarkson

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Leona Lewis

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Alicia Keys

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Melody Thornton

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Colbie Caillat

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Carrie Underwood

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Paula Abdul