The High School Musical stars are all smiles while out to dinner in L.A. Plus: Brad Pitt, Mariah Carey, Miley Cyrus and more

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BUBBLY NEW YEAR

With a glass of champagne and a party at TAO nightclub in Las Vegas, Mariah Carey has everything she needs for New Year's – except a resolution. "I should have them, but I've already done them," she says, noting she reached her diet goals in 2007.