Paris Hilton celebrated her 27th birthday by performing a sexy striptease on Saturday night.

The hotel heiress wore three separate outfits for the performance in the Pussycat Dolls Lounge in Las Vegas' Caesar's Palace, and ended up in a white sparkly bra and knickers set performing a raunchy dance routine in a giant martini glass alongside the Pussycat Dolls.

One onlooker said: "Paris looked as though she was having a fantastic time! She started off wearing black bondage lingerie before changing into a corset, knickers and suspenders."

"By the end of the performance she was in this martini glass and the crowd was going crazy."

Following the sexy show, Paris joined her friends at the Pure nightclub next door where they indulged in some more traditional birthday celebrations. Paris recently revealed she had designed her own outfits for the performance.

She said: "I'm designing my own costume, something sexy. I've been practicing all week. This is my first time singing and performing with the Pussycat Dolls. I'm totally nervous but it should be fun."

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