The Hilton sisters caused a scene in vegas when Paris boyfriend was told her could not party with them since he is only 19. Las Vegas gossip columnist Norm Clarke reports:
...their massive entourage arrived at Pure, a Ceasars Palace nightclub, at around 3:30AM. The underage shipping heir reportedly flashed a fake ID in order to join a bash that was being thrown by Paris' sister Nicky, but was summarily turned away. Clarke says Paris and Nicky had a hissy fit and left.
The group ended up at Body English at the Hard Rock. I guess they like serving to underage men like Stavros. Also apparently the girls went to apologize to the folks at Pure for their temper tantrums the next day.