Caught in the Act

Sean Penn Parties with Cindy Crawford & Friends Way Past Midnight

07/06/2012 at 06:00 AM EDT

Sean Penn was in great spirits during a recent outing with pals.

Accompanied by a group of about 10 guys, the Academy Award winner made his way to a Caliche rum-hosted fete thrown by Rande Gerber and his wife Cindy Crawford at Gerber's Malibu, Calif., restaurant Café Habana.

"Sean was in a really happy and social mood," an onlooker tells PEOPLE. "He was getting up from the table often to get more drinks, socialize and smoke cigarettes. There wasn't any specific girl he was paying special attention to. He mainly just stuck to his guy friends."

Penn was having so much fun, in fact, that it didn't seem like he wanted to go.



"He ended up being one of the last ones to leave," the source says. "He was there from about 7:45 a.m. to almost 1:30 a.m."
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