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Kelly Clarkson! Adele! Katy Perry! See who got busy celebrating way into the night
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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Maybe his star is shining too bright? Of-the-moment country singer Eric Church takes five outside the Warner Music/InStyle after-party at the Chateau Marmont.
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