Kim Kardashian Celebrates 31st Birthday in Las Vegas (PHOTOS)

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It has been an exciting week for Kim Kardashian. The reality star continued to celebrate her 31st birthday hitting up Marquee Nightclub inside The Cosmopolitan of Las Vegas on Saturday night. The birthday girl wore all white and was joined by husband Kris Humphries, her sister Khloe and her husband Lamar Odom, mom Kris Jenner and Kim’s former Dancing with the Stars partner Mark Ballas.

Outside the venue, hoards of fans were screaming Kim’s name from the casino floor. After walking the red carpet, Kim even stopped and signed autographs before heading upstairs to the club.

In the club, Kim and her family danced all night to DJ Cedric Gervais from a VIP table on the dance floor. She was even presented with a custom birthday cake from Gimme Some Sugar, which depicted she and Kris in a white Ferrari with a custom Kardashian logo on the car.

Getting into the festivities, Khloe got on the mic to have the entire room sing “Happy Birthday” to her sister.

Earlier this week, Kim celebrated her birthday at New York hotspot, The Darby. She and her friends let loose during a private party catered by celebrity chef Alex Guarnaschelli.

The newlywed couple smooched, smiled and canoodled the night away despite a whole lot of nonsense in the rumor mill this week. Kris was rocking his signature white long-sleeved shirt while Kim opted for a bit of flair with a fur scarf to accessorize her outfit.