You open your closet, see a sleeveless dress, and immediately close the door. Same. Winter weddings are the hardest dress code to crack — you need to look polished for a 4 PM ceremony, survive an outdoor photo hour at 28°F, and still dance at the reception without sweating through your blazer. I spent last December attending three weddings across different climates (upstate New York barn, Chicago ballroom, Charleston courtyard) and tested exactly which outfits worked and which failed. Here are the five rules that made the difference. Rule 1: Fabric Weight Matters More Than Silhouette Most guests pick a…