This is a adult-only wedding. Please leave your little ones at home Summer Formal: The goal is to achieve a formal look while also keeping any outdoor weather conditions in mind. Women A formal summer sundress with sandals or a jumpsuit that’s light and dressy. A good rule for a beach wedding is to avoid heels and opt for dressy sandals or flats. If you prefer to go with heels, wedges might be your best bet. Men A light suit with a linen shirt, pants, sandals, or boat shoes. Ties are not a requirement. Another example: dress pants with Hawaiian shirts