It's always important to dress appropriately as a wedding guest, and in many cases, it all comes down to being able to decipher the event's dress code based on the invitation or whether it's an daytime or evening reception. However, when you're attending a winter wedding, you also have to contend with cold weather, snow, and ice. Given the season, you may have to tweak your usual wedding attire to include heavier fabrics, richer colors, and clothing styles that provide a little more coverage for added x trench run warmth.