Julia Roberts: Still a Pretty Woman

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It's hard to believe Julia Roberts is over 40--but on Oct. 27, the flame-haired beauty celebrated her 41st birthday (which is actually on the 28th)  a day early with a star-studded party in San Francisco.

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Accompanied by her hubby Danny Moder, Roberts proved she was still the one and only Pretty Woman as she welcomed celebrity guests to a dinner party on the patio of Jardiniere Restaurant.  Those in attendance included heavyweights Tom Hanks and Rita Wilson, Bruce Willis, Jack Nicholson, Sean Penn and Robin Wright Penn, Billy Crystal, Danny Devito and Casey Affleck, who serenedaded Happy Birthday to the Oscar winning actress.

It was a bittersweet night for the group, who was in San Francisco to support the late Paul Newman fundraiser (planned months before his death) in aid of California camp The Painted Turtle at Davies Symphony Hall. 

An eyewitness tells OK! that Julia's birthday bash went well into the wee hours of the morning. Party guests finally started trickling out around 1:30 a.m.

"All the guests were in a good mood," a fellow diner tells OK!. "Billy Crystal's wife was a little nervous to leave the restaurant because a crowd had formed out front, but Billy told her, 'Julia just left, we'll be fine!'"

CLICK HERE for OK!'s Ultimate Julia Roberts Gallery!