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Kelly Clarkson! Adele! Katy Perry! See who got busy celebrating way into the night
Credit: Vince Flores/AFF-USA
Updated: Monday Feb 11, 2013 | 10:00 AM EST
By: Kiran Hefa & Kate Hogan
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Click to view your favorites as they make their way down the red carpet
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Girls star Lena Dunham skips her show's Sunday airing for a Fun. outing with the band's guitarist, and her boyfriend, Jack Antonoff.
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