Lily Aldridge Jessica Hart Jamie Chung

Holiday party season is in full effect, and last night's guests rocked the perfect, festive looks to prove it. From colored leather, to cozy knits, to chic party dresses, there was no shortage of stunning ensembles at events around the city on Thursday. Jessica Hart, Lily Aldridge and Jamie Chung were just a few of our favorites, but click through to see who else grabbed our attention yesterday evening.