Celebs love Victoria Beckham

A bunch of celebs attended Victoria Beckhams 34th birthday party last night. TomKat, Eva Longoria, Diddy, Usher, Elton John, Gwen Stefani, Will & Jada Pinkett Smith & Kate Beckinsale all attended. Does she not have any non celeb friends ?

Victorias birthday was on April 17th though so why celebrate is last night ?