Kim Kardashian celebrates her 31st birthday in Las Vegas

Slideshow posted in Photos | Sunday, October 23, 2011

22 of 23: Lamar Odom, Khloe Kardashian, Joyce Bonelli, Kim Kardashian and Clyde Hayward celebrate Kim Kardashian's birthday at Marquee Nightclub at the Cosmopolitan in CityCenter on October 22, 2011 in Las Vegas, Nevada. (Photo/Denise Truscello)