It's safe to say a Chanel-hosted event will draw a crowd of Chanel-clad style stars. Such was the case at last night's NYC celebration of the label's iconic Little Black Jacket and its photo exhibition, featuring many of last night's attendees. The room read like a who's who in supermodels and style setters — with Karl, himself, making an appearance, not in the little black jacket, but a sleek white blazer. Among the other standouts, we spotted the ever-cool Jessica Hart styling up skinny leather pants, the lovely Poppy Delevingne in a Spring-ready floral print, and a very chic Lily Collins showing off a look from Chanel's Pre-Fall '12. Step inside to see the rest of last night's notable arrivals — and be sure to tell us your pick for best dressed in comments.