The Kardashian family members hit Sin City on Friday night to celebrate the 25th birthday of former Dancing with the Stars celeb Rob Kardashian.

On hand for the celebratory bash were Kim Kardashian, Kris Jenner and her two youngest daughters Kendall, 16, and Kylie, 14.

The group dined 1st at Stack Restaurant at the Mirage just before strolling over to the Kardashian Khaos way of life boutique for some posing.

Then it was on to the birthday bash that included a colorful custom tiered cake at 1Oak for the older set even though the teens were relegated back to the family hotel suite.

Earlier in the day Kim K. posted a photo that was captured by an individual walking behind the reality celeb and her small sister.  Kim tweeted, “Kendall and I are like Arnold Schwarzenegger &amp Danny DeVito.”

On a somewhat related note, a new ad for Kardashian Kollection Intimates was released a few days ago featuring Kim, Khloe and Kourtney is some super sexy undies.

Check out all of the pictures beneath:

Photos:  WENN, Twitter-Kim Kardashian

Filed beneath: Kim Kardashian