Backyard barbecues are about the food and the family and friends, not about the fashion. Who wants to worry about ketchup squeezed onto her dry clean only dress or shoes pinching during a pickup volleyball game? The easiest summer casual outfit — a crisp casual tee and worn in jean shorts paired with canvas sneakers or comfy sandals. Depending on mood, you could throw on a scarf. And of course, never leave home without those sunglasses, hat, and crossbody bag.