Kim Kardashian Is Older

Kim Kardashian turned 28 last week, so to celebrate she put on her most youthful face and headed to Vegas for some rockstar replenishment. 

I guess the Dancing reject's former friendship with Paris Hilton was fruitful.  It clearly taught Kim an important lesson: you aren't really aging if you keep partying like your 22! 

See below for photos of Kim partying in Vegas with her sisters Khloe and Kourtney, future fiance Reggie Bush and pals Britney Gastineau, Robin Antin and Caroline D'Amore at LAX Nightclub on Friday.