Someone stepped it up in Las Vegas with sexy fishnets, a super shiny(and '80s) swimsuit, and some "sleeves" that could get a fashion designer fired. Even though she took to the stage solo to get down, she wasn't alone in the club at all-- she had plenty of support to back her up.

Can you guess who was rocking some hot pink tights and a soapy sponge this past Friday?

It's Kim Kardashian! She's pictured here in her second wardrobe change where she performed with the Pussycat Dolls.

Which costume change do you prefer-- her sailor getup or her bathing beauty outfit? Or, um, neither?