Nicky and Paris Hilton and More Celebs Party at Pure

It was a star-studded weekend at Pure nightclub in Las Vegas when Paris and Nicky Hilton, Eva Longoria Parker and Wilmer Valderrama dropped by to kick off the Labor Day holiday weekend on the mega club's VIP stage.

The Hilton sisters were first on the scene -- joined by Nicky's boyfriend David Katzenberg -- to party to the hot tunes spun by Pure's resident DJ, DJ AM. In between dances, Paris and Nicky took a break to pose for photos with fans.

Then Eva and Wilmer dropped in with a gang of friends and joined the party on the VIP stage, where Grey Goose cocktails and shots of Patron Platinum were the drink of choice -- except for Eva who opted for Fiji Water.