Kim, who is mother to baby Nori, chose wild Las Vegas as the venue for her celebrations and announced her arrival in Sin City on Friday.
"Vegas...we've arrived!!!" Posted the birthday girl on Instagram, along with a photograph showing her surrounded by her friends.
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Kim's closest buddy Jonathan Cheban helped make up the group as did and rapper Tyga and Kim's new fiancé Kanye, who is seen in the picture standing on the bonnet of a car.
Stylish Kim then let her blonde hair down, changed into a white dress and headed to the Venetian Hotel's Tao Nightclub where her exclusive party took place.
"Let the bday festivities begin Vega$," posted Kim, tagging in her special guests. "@nayarivera @kourtneykardash @blacchyna @robinantin."
In true Kardashian style Kim's party was a family affair. As well as her sister Kourtney, who is seen in the picture wearing a black two piece outfit, Kim was joined by her sister Khloé, mother Kris and Kourtney's partner Scott Disick.