Quite a celebrities were snapped out and about making their way into 2010, sporting everything from carefree casual to catwoman-inspired looks.

Check out the pics below.

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Christina Aguilera

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Hayden Panettiere

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Jennifer Lopez

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Salma Hayek

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Mariah Carey

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Kelly Killoren Bensimon (Who is this?)

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Vanessa Minillo

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Melody Thornton

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Adam Lambert

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Pamela Anderson