The royal enclosure has a strict dress code. Men are expected to wear full morning dress, with a top hat (a suit just will not do). Women must wear hats or headpieces of a specified size, and dresses or skirts must have hemlines to the knee or longer and straps of a certain width (as shown here by British TV presenter Holly Willoughby). Strapless dresses, backless dresses, halter styles, and spaghetti straps are all banned.