Photographer Drew Altizer goes to all the good parties! Drew reports in from Saturday's birthday party for DJ AM (Adam Goldstein, former fiance of Nicole Richie and just-dumped boyfriend of Mandy Moore) at Mezzanine, featuring not only the birthday boy himself on the turntables, but also Travis Barker (from +44 and the defunct Blink-182, as well as a former Paris Hilton fling and the back-on again husband of Shana Moakler, of reality TV fame). Drew didn't mention whether any of the ladies in that crew showed up.

Why's DJ AM celebrating his birthday in San Francisco and not with his Us Magazine squeeze of the week? Others on the docket were Mickey Avalon, Dirt Nasty, and Andre Legacy. The performance was 100% sold out, and Drew said it was a great show.

More pictures by Drew after the jump!