• Kai Kühne holiday party. Beatrice Inn, 285 W.12th St., nr. W. 4th St., 10 p.m. The Beatrice Inn is a crap-looking but secretly exclusive club owned in part by Paul Sevigny. Kai Kühne is an entertaining parody of a parody of a whacked-out fashion designer lost in his own Zoolander world of egotism, spandex, and sparkly things shaped like butterflies. And there's a rumor the Proenza boys may show up.
• Stuff Magazine's Toys for Bigger Boys party. Hammerstein Ballroom 311 W. 34th St., nr. Seventh Ave., 9 p.m. The event is a showcase for gadgetry and, of course, breasts: Scheduled to appear are former Miss USA Susie Castillo and Swedish ex–Playmate of the Year Victoria Silvstedt. Expect the boys to look wistfully at the models and then return to the PlayStation's familiar bosom.
• Catherine Malandrino Soho boutique relaunch. 468 Broome St., nr. Greene St., 6 p.m. Scheduled guests include Ms. Malandrino, megasocialite Tinsley Mortimer, shoe designer Patricia Field, and Zani Gugelman, a respected and classy jewelry designer whose name nonetheless always makes us think that she's the secretary from Ghostbusters. In fact, that character's name is Janine Melnitz.
Or, check out all our Agenda listings for tonight, selected by New York's culture editors.