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Kim Kardashian celebrated her bachelorette party at Las Vegas’ Tao Saturday, then ventured next door to crash fiance Kris Humphries’ bachelor party at LAVO.

Breaking their promise not to see each other, Humphries proudly kissed his bride-to-be in front of the entire nightclub. Kim and her friends then partied with Humphries’ guests, which included Kardashian brother Rob, Kourtney Kardashian’s boyfriend Scott Disick and Khloe Kardashian’s husband NBA player Lamar Odom.

Cameras documented both parties for an upcoming episode of the hit television show Keeping Up With the Kardashians.