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Paris Hilton, along with 50 Cent, Lenny Kravitz and tons of other celebs partied hard with designer Christian Audigier in Cannes last night as he celebrated his 51st birthday at the VIP Room. Paris rocked a sexy floor length sequined gown, and Christian looked like he was having the time of his life as he sang, danced and drank the night away.

Awww, it looks like everyone had a fabulous evening - we just hope they've recovered by now!