More weddings happen during the summer than any other season, so you've probably got one coming up. Dressing for such events in November is easy—a dark wool suit and your best lace-ups. But when it's an outdoor ceremony in 85 degree weather at the beach or in the country, the rules are a bit different. Whether you're getting hitched yourself or simply attending, you can't go wrong with a crisp cotton suit. If you're skipping the suit, keep things simple, classic and most of all, comfortable. Here are two similar looks: one dressed up, the other more casual.