I have a really warm North Face 2in1 Jacket. If I'm just running around town, going from car to building and back, I only wear my warm coat. Some days I wear knee high socks, which make a difference.
If I'll be outside for an extended period of time or if it's really windy, I'll wear a hat, snow boots, gloves, and maybe something for my face. I don't own any snow pants, but plan to buy some for long outings outside like sledding or something.
My hat looks something like this:
My snow boots like this:
My coat something like this:
So it's pretty obvious I'm all about function over fashion, LOL.