Summer Wedding Long Dress . Kate Middleton and Meghan Markle made long-sleeve wedding dresses popular again, but what if you want to wear a long-sleeved gown in the summer? If you're not one to experiment too much with your everyday attire, a wedding guest dress is the time. Grace Karin Women Long Evening Dresses A line Summer ... (Owen McCormick) Attending a summer wedding looking stylish and without melting into a puddle before the speeches commence is something akin to an art. If you're not one to experiment too much with your everyday attire, a wedding guest dress is the time. Try a one-shoulder dress to give yourself a goddess vibe. Summer weddings can be a lot of fun, but you'll need to choose your outfit carefully in order to dress appropriately for. Wedding dress codes come with a lot of stipulations — don't go too short, don't go too flashy, and please, please don't wear white (ecru, eggshell, or.