Paris Hilton celebrated her 27th birthday performing a risqué show in Las Vegas with the Pussycat Dolls this weekend. The socialite dressed in an all white leather outfit showed up the Pussycat Dolls Lounge and began the show. At around 12:32 a.m, the sexy star asked the audience, “Are you guys ready to get sexy tonight?” Then, Paris, her sister Nicky and boyfriend David Katzenberg continued the bash in Pure nightclub at Caesars Palace.