Nicole ‘Snooki’ Polizzi makes an appearance at GBDC at Palms Casino Hotel in Las Vegas.

Pamela Anderson hosts Studio 54′s Final New Year’s Eve at MGM Grand in Las Vegas.

Wiz Kalifa and girlfriend Amber Rose partied at Surrender Nightclub in Las Vegas.

Will.i.am of the Black Eyed Peas hosted at the swanky Surrender Nightclub at Encore at Wynn Las Vegas.

Fergie and Josh Duhamel at the New Year’s Eve party at 1 OAK at The Mirage Hotel and Casino in Las Vegas.

Mario Lopez and Courtney Mazza celebrate at the Big Bang New Years eve party 2012 in Hollywood.

Holly Madison at the New Year’s Eve Party at Chateau Nightclub & Gardens in the Paris Hotel and Casino in Las Vegas.

Ronnie Ortiz-Magro at the New Year’s Eve Party at Chateau Nightclub & Gardens in the Paris Hotel and Casino in Las Vegas.

Lady Gaga performs in Times Square for 2012 New Years Eve celebration in NYC.

Paris Hilton and DJ Afrojack attend ‘Jacked 2012′ New Year’s Eve Celebration at W South Beach.