Audrina PATRIDGE takes the stage with the PUSSYCAT DOLLS!

The Hills' Audrina Patridge got into costume to introduce the Pussycat Dolls at PURE Nightclub in Las Vegas Friday.
"This is the first time I have seen the Pussycat Dolls," Patridge told the crowd. "They are absolutely amazing."
Audrina won raves from Pussycat Dolls founder Robin Antin. "She is so hot," Antin said. "She walked in the room and I said 'Wow, now that's a Pussycat Doll.'"
"Audrina is the ultimate Pussycat Doll," Antin said. "She will be back so you will get another look at that beautiful face. The face of an angel."
Notably absent? A tattoo on Patridge's left arm she had inked on Thursday. It was speculated the tattoo was just a stunt for Ashton Kutcher's Pop Fiction show.
When Patridge signed on to introduce the Pussycat Dolls earlier this month – before topless photos of her surfaced online – she was rumored to have joined the group.
"I don't know where that came from!" she told Usmagazine.com. "I'm going to introduce them one night and that's it!"
Last weekend, Kevin Federline celebrated his 30th birthday with the Pussycat Dolls at PURE.
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Audrina is one of those people that doesn't know how to smile natural in posed photos. She always looks like a cyclopse!