Katy Perry  celebrated her waning days as a single woman with Rihanna 's help at her bachelorette party in Las Vegas on Saturday (Sept. 18). With a group of 25 girlfriends, Perry toasted her impending wedding to actor/comedian Russell Brand with an all-day affair that caused the singer to post on her Twitter , "Signing up for a liver transplant now."
According to People , the party began poolside at the Hard Rock Hotel Beach Club on Saturday afternoon, with Perry sporting a white bikini with a veil hanging from the back of her bikini bottom. Perry then brought Rihanna and the rest of her crew to the MGM Grand Hotel/Casino to check out a performance of Cirque Du Soleil's "KA."
The group later grabbed dinner at Ago and relaxed at a VIP table at XS nightclub. The night ended with a visit to Sapphire strip club.
The bachelorette party followed Brand's arrest on Friday  (Sept. 17) after getting into a fight with a paparazzo at Los Angeles airport. After the incident, Perry posted on her Twitter , "If you cross the line & try an put a lens up my dress, my fiancé will do his job & protect me. #standbyyourman #don'tfuckwiththeBrands."
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