Wearing a figure-hugging (what else?) sequined cream-colored dress, the former Mrs. Kris Humphries, was the star attraction on the red carpet.
PHOTOS: Rob Kardashian Turns 25 In Las Vegas
Hosting their own birthday parties in Vegas is big business for the Kardashian clan but maybe Kim just needed a night of fun as her divorce/annulment case drags on.
Dancing with the Stars alum Rob was also joined by his mother, Kris Jenner. She was such a party animal, at one point Kim tweeted http://twitter.com/#!/kimkardashian “mom gone wild!”
His teen half-sisters, Kendall and Kylie Jenner were part of the scene for an earlier dinner.
At 3 am, they all the Kardashian-Jenner womenj piled into a private jet and headed back to L.A.