Paris Hilton showed her support for pal Britney Spears by grinding to one of the pop star's tunes at a Vegas club.

Hilton put her breast foot forwards as she and sister Nicky proved they can still boogie with the best of them.

Britney meanwhile was also in Sin City this week warming up for her MTV Awards appearance.

After dropping off her boys with ex-husband Kevin Federline Brit headed to the desert and dropped into an itsy witsy teeny weeny bikini, showing the world that her body's back to its best.

And they weren't the only ones partying like rock stars in Vegas... watch more gossip on Halle Berry, Johnny Depp and Eva Longoria.. it's the video the stars don't want you to watch!