From N.Y.C. to Sin City, see how Gaga, Fergie, Rihanna and more popped the cork on 2012
Credit: David Becker/WireImage
Updated: Sunday Jan 01, 2012 | 11:00 AM EST
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After showing off her ice-skating skills, Holly Madison flaunts her famed figure while welcoming 2012 at the Chateau Nightclub & Gardens in Las Vegas.
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