I'd say the hardest part of being a winter bride is getting to and from your various destinations gracefully without freezing to death. The good news is, you don't have to shiver when there are so many chic wraps and cover-ups out there to be had. You can even go strapless or sleeveless as long as you're in a coat or cape.
Do invest in some warm accessories like a fur or faux fur capelet. Opera length gloves are a great substitute for sleeves and uber-chic. Going to and from your ceremony and reception is a cinch if you have a pair of white boots with which to traipse through snow. And don't forget your head. A fur hat or hoodie could be just the right touch to top off your snow princess look and keep your ears from frosting over.