With his girlfriends by his side, Hugh Hefner celebrated his 80th birthday at the Playboy Mansion on Saturday. Hef was decked out in his traditional silk pajamas.
Paris Hilton, Owen Wilson, Donald Trump, Farah Fawcett and Oliver Stone were all on hand to join in on the festivities.
If you've never been inside the mansion, then check out this video -- it's everything a Playboy party should be.
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