Packing for a trip to NYC

I am headed out tomorrow for a quick jaunt to New York City to visit some dear friends and my brother, Jeffrey.  I like to think of myself as a generally stylish person, but I am always a little intimidated when packing for trips to NYC and LA.  I want to look like "me," but also kick it up a notch.  Some photos for inspiration . . .

Dear readers, do you have a go to big city winter outfit?  Where do you find packing inspiration?