From N.Y.C. to Sin City, see how Gaga, Fergie, Rihanna and more popped the cork on 2012
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Updated: Sunday Jan 01, 2012 | 11:00 AM EST
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In Los Angeles, a very Jetsons-esque Nicki Minaj looks ready for the future – which will likely include an appearance at the Feb. 12 Grammys – while performing "Super Bass" on Dick Clark's New Year's Rockin' Eve.
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