'Dancing With the Stars': Audrina Patridge will cha cha to Katy Perry

audrina-patridge-dwts-cha-cha-practice.jpgWhile visiting "Lopez Tonight" on Tuesday (Sept. 14), reality star/burger pitchwoman Audrina Patridge let something slip. She will take to this season's "Dancing With the Stars" floor for the first time performing a cha cha to the delightful strains of Katy Perry's "California Gurls."

OK, she didn't exactly let it slip. She and her ballroom pro, Tony Dovolani, showed off their cha cha skills for the studio audience.

"It's really fun, it's upbeat, it's sexy," Audrina says, admitting that she's still "really nervous" about performing, despite practicing five to six hours a day for the past two weeks.

Audrina also shares that Mike "The Situation" Sorrentino finally started rehearsing Monday, David Hasselhoff hasn't hit on her yet and that 76-year-old Florence Henderson will provide this season's "wow factor."

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