BLACK TIE

Black tie is a formal dress code for evening events, originating in British and 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 tuxedo is common. For women, an evening gown or other fashionable evening attire may be worn.
The first dinner jacket is traditionally traced to 1865 on the then Prince of Wales, later King Edwar VII (1841–1910)