tuxedo

A man wearing a dinner suit with shawl lapels, a cummerbund, a black bow tie, and Oxford shoes

Black tie is a semi-formal Western dress code for evening events, originating in British and North American conventions for attire in the 19th century. In British English, the dress code is often referred to synecdochically by its principal element for men, the dinner suit or dinner jacket. In American English, the equivalent term tuxedo (or tux) is common. The dinner suit is a black, midnight blue or white two- or three-piece suit, distinguished by satin or grosgrain jacket lapels and similar stripes along the outseam of the trousers. It is worn with a white dress shirt with standing or turndown collar and link cuffs, a black bow tie, sometimes an evening waistcoat or a cummerbund, and black patent leather dress shoes or court pumps. Accessories may include a semi-formal homburg, bowler, or boater hat. In Britain, some individuals may rebel from the formal dress code by wearing coloured socks or a bow tie that is not black, such as red. For women, an evening gown or other fashionable evening attire may be worn.