Cocktail Attire - Cocktail wedding attire is a slightly more elevated dress code than semi-formal attire but is less formal than formal wedding attire (also known as black-tie optional). Attire examples include; a suit or slacks with a sport coat, a short or long dress, or formal jumpsuit. Jeans, ripped clothing, sneakers, or overly tight attire should be avoided. The Brides will be in olive green and burgundy. The wedding party will be in navy.