As a very realistic-looking monkey, Heidi Klum managed to top the spectacle she made at her Vegas party in New York last night. That also makes her the obvious winner of this year's epic models-hosting-Halloween-events showdown. She told us Project Runway alum Nick Verreos helped with her costume, which she'd been working on since July: "Getting dressed was not the problem — the makeup took almost six hours!" But getting undressed is another matter, "Oh god, I don’t even want to know. I’m already scared about that." The party offered everything from the Easy Cheese mascot to the Gremlins re-created in costume. See our slideshow of guests including Tyson Beckford in combat fatigues, Amber Rose as Slash, someone hiding in a bush, and of course, Heidi herself.