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Rumer Willis celebrated her 21st birthday Saturday at Tao in Las Vegas, reports Perez Hilton.

The eldest daughter of Bruce Willis and Demi Moore is currently filming episodes for a guest appearance on teen drama 90210. She can also be seen in the upcoming teen flick Sorority Row.

Perez Hilton reports Rumer Willis, the eldest of Bruce Willis and Demi Moore’s three daughters, will be appearing on the CW’s 90210 next season as Gia, a punky lesbian who works on the school newspaper.

Willis, 20, is only planned to guest-star in one episode of the hit series, but may be called back to continue the role if it’s successful.

In the past, she has guest-starred on Army Wives, CSI: New York, and Medium. Each appearance was just for one episode.

According to Entertainment Weekly, she will also appear in an episode of ABC Family’s The Secret Life of the American Teenager, scheduled to air in mid-August.

Rumer Willis now has a title – other than “Bruce Willis and Demi Moore’s daughter.”

Willis has been chosen as 2008’s Miss Golden Globe, a role given every year to the child of a celebrity. Her job will be to bring out the statuettes to the winners.

Jane Seymour, Susan Lucci, Clint Eastwood, Jack Nicholson, and Melanie Griffith have all previously lent out their daughters on awards night.

Willis is currently working on her own acting career, as well as appearing frequently in the tabloids.