Men's formal suit generally refers to a suit, and a complete formal suit includes a coat, trousers, shirt, tie, belt, socks and leather shoes. Women's formal attire refers to suits and skirts, as well as dresses or two-piece skirts. On formal and serious occasions. Formal dress colors are solemn, avoid eye-catching, tops are flat and crisp, shirts are mainly monochrome, clothes should not be too exposed or transparent, and accessories should not be too much or exaggerated.