The Camp Rock 2 star toasts her 18th birthday with a sparkling night in N.Y.C. Plus: Kim Kardashian, Hilary Duff, Jen Aniston and more

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Demi Lovato adds a little sparkle to her birthday celebration on Thursday night, toasting her 18th with pals at New York City's Buddakan restaurant. The newly single star has been in town promoting her new Disney Channel movie, Camp Rock 2.

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