After the holiday weekend, New Yorkers got back into the swing of things with a number of premieres and openings in NYC last night. Sami Gayle continued her fashion winning streak with another great look at last night's "The Company You Keep" premiere. Meanwhile, Emmy Rossum was feeling the '50s in an icy blue Temperley London number at the opening of "Lucky Guy" on Broadway. Click through to see their amazing looks, as well as our other best dressed guests from Monday night.