If it were me, and keeping in mind that it's winter & night:
I would wear a longer black or faux fur belted trench.
I wouldn't wear stockings but if I had to, I would also go with black.
I wouldn't wear stockings because I'd want to wear some hot, strappy high sandals to go with this. I would stick with metallics or neutrals but something pretty.
The color looks to be so light/blush/peach-y that I wouldn't do bold colors on top of this. I also wouldn't do any cropped jacket or such unless it was a cool, cape maybe.
For hair, you really could do up/down/or 1/2. I would wear crystal chandelier earrings and a cool, embellished, bling-y clutch
