Jennifer Lopez, the cast of the Broadway musical Hair and Daughtry will perform during the traditional Dick Clark’s New Year’s Rockin’ Eve in Time’s Square in NYC, hosted by Ryan Seacrest and aired live on ABC, starting at 10 p.m. Also in New York, Mariah Carey and her husband Nick Cannon will host a party at M2 Ultra Lounge. Adam Lambert will sing and Pamela Anderson will host a party at Gridlock Out at Paramount Studios in Los Angeles. Fergie and the Black Eyed Peas will perform at LAX at the Luxor. In Las Vegas, Nicole Richie and Joel Madden will be celebrating at LAVO Las Vegas. Christina Aguilera hosts the party at Tao Las Vegas in The Venetian, while 50 Cent will perform at PURE Nightclub at Caesars Palace. Pete Wentz hosts Jet Nightclub’s bash in The Mirage, while Eva Longoria Parker hosts a party at Eve Nightclub inside Crystals at CityCenter. In Florida, Lady GaGa will perform at poolside at LIV at the Fontainebleau. Happy New Year’s everyone!