The Playboy magnate turns a whopping 82 years old yesterday. And he got an early birthday present from Pamela Anderson. When Hugh Hefner and Holly entered their penthouse at the Palms, they were greeted by Pam, who was butt-ass naked except for a pair of high heels, and holding a cake. "Pam wasn't paid to do it, she just wanted to show her love for Hef," says a source. Um, okay, but between Girls Next Door and Pam's upcoming reality TV show, how many video cameras do you think were there to capture this sweet, private moment and use it in promos? Yeah.