Audrina Patridge denies she is joining the Pussycat Dolls

Audrina Patridge has laughed off reports she is set to join the Pussycat Dolls.

"I'm not going to be in the Pussycat Dolls!" The Hills star tells Us Weekly. "I don't know where that [rumor] came from!"

But she will hit the stage with the 'Stickwitu' stars March 28 at Las Vegas' PURE club to celebrate the new season of her hit MTV show.

"I'm going to introduce them one night and that's it!" she insists.

Patridge was among the pals who attended Lauren Conrad's first ever fashion show on Tuesday in Los Angeles.