Genevieve JonesLily AldridgeNicky Hilton

It was a busy night of launch parties, openings and dinners in NYC last night. Some of our favorite celebs put together great outfits, from Nicky Hilton's red leather pants to Lily Aldridge's stunning minimalist ensemble. To get a closer look at what these fashionista's wore, click through to see our picks for the best dressed guests from Tuesday night.