[Amanda Seyfried, Emily Blunt, Jessica Chastain, Anne Hathaway via]

Now that all of the holiday madness is officially over and New Yorkers are returning from their winter vacations, they're ready to get right back into the swing of things. And that is exactly what they did last night, with guests attending events all over the city in all their fashionable glory. It was all about the jumpsuit at the Stella McCartney Autumn 2013 presentation. Meanwhile, some stylish leading ladies turned heads at the National Board of Review Awards Gala. Click through to find out who made our ten best dressed guests of the night.