If nothing else, Paris Hilton sure knows how to celebrate Paris Hilton.
The erstwhile Simple Lifer capped a weeklong birthday celebration Friday night with a bash at her house.
The Studio 54-themed soiree was complete with a photo booth, a performance by Mickey Avalon, go-go dancers on poles and a red velvet Andy Warhol-inspired cake with Paris' face on it.
Paris, whose actual B-day was back on Feb. 17, tented her backyard and set up a dance floor and a special VIP area (we're not kidding), where the birthday girl spent most of the night with Reinhardt and her closest pals. DJ Mr. Best worked the turntables.
Many guests dressed for the party theme, including Panettiere, who was barely recognizable in a sparkly gold dress, fake long eyelashes and her new dark hair—but was sans rumored new boyfriend, boxer Wladimir Klitschko.
Guests noshed on trays of Fatburger turkey burgers, mini grilled cheese sandwiches and small containers of buffalo chicken macaroni and cheese and washed it all down with Ty-Ku cocktails.
See who else is feeling festive in Tinseltown in our Party Pics: Hollywood gallery.