'Hills' Star Audrina Patridge Parties With Pussycat Dolls

LAS VEGAS, Nevada -- Fresh off the heels of the ratings-busting premiere of her reality show "The Hills," Audrina Patridge celebrated in Las Vegas with The Pussycat Dolls earlier this weekend, Access Hollywood has learned.

The reality star helmed an evening of Pussycat frivolity, putting her in the ranks of former hosting alumni Paris Hilton, Pamela Anderson and Carmen Electra.

[ Access News: Fergie's 33rd Birthday, Chikeze's Curtain Call & Piers, 'You're Hired!' - Play it Now ]

Audrina hit the stage just past the stroke of midnight decked out in her best Pussycat Doll duds. She wore a rhinestone-studded getup with a sequined hat and fishnet stockings to introduce the troupe and even made a costume change into a second revealing outfit before the night ended.

After the show, Audrina and her entourage, which included her sister and Pussycat Dolls creator Robin Antin, kept the night going at PURE, where the "Hills" star rubbed elbows with fellow club-goers actor Shane West, "90210" star Ian Ziering, and boxer Mike Tyson.

[ Reality Stars - Check Out the Photos ]

Earlier in the night, Audrina and pals enjoyed a savory dinner of mini Kobe burgers and a dessert platter, at Las Vegas hotspot Social House inside TI.

It was a busy week for the "Hills" starlet. After topless photos surfaced of Audrina on the Internet last week, she was spotted getting a tattoo in Chinese writing on her left forearm Friday, that reportedly translates to, "The rice is fried in pork fat," according to OK! Magazine. Luckily, the odd tattoo is widely believed to be part of Ashton Kutcher's new prank show "Pop Fiction," which attempts to trick the paparazzi with the help of celebrities.

[ All Access: Celebrities - Reality TV - Young Hollywood - The Hills - Las Vegas ]