Elizabeth Olsen at Swarovski Party in NYC | Pictures

Fashion Week opens today in NYC, but the fun began with events last night. The Swarovski Celebration was just one bash, and it brought out Elizabeth Olsen and Julianne Moore. Elizabeth chose an Antonio Berardi dress while Julianne went with a simple black pantsuit. Elizabeth's gearing up for the release of Liberal Arts, which hits theaters Sept. 14, and posed with pink hair for Bullett Magazine to promote the project. She also appears in the September issue of Glamour magazine. There's plenty more action in store as Fashion's Night Out takes place this evening — we'll be covering the best parties and hottest stars so check back for updates!