Last week, Snooki celebrated her birthday courtesy of Lifestyles Condoms, so it was bound to have been a delightful event for everyone in attendance. Christina Aguilera and Cher attended the premiere of their new movie, Burlesque, Katy Perry promoted her new fragrance, and Sam Worthington was the man on a ledge while shooting Man on a Ledge. Check if Paris Hilton, Demi Moore and other celebrities had such eventful weeks in the gallery below!
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