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White tie, also called full evening dress or a dress suit, is the most formal in traditional evening western dress codes. For men, it consists of a black tail coat (alternatively referred to as a dress coat, usually by tailors) worn over a white dress shirt with a starched or pique bib, white piqué waistcoat and the eponymous white bow tie worn around a standing wing collar. Mid or high-waisted black trousers with galon, a braid of trim consisting of two silk stripes to conceal the outer seams of the trousers, along with court shoes complete the outfit.
A top hat (also called a high hat, a cylinder hat, or, informally, a topper) is a tall, flat-crowned hat traditionally associated with formal wear in Western dress codes, meaning white tie, morning dress, or frock coat. Traditionally made of black silk or sometimes grey, the top hat emerged in Western fashion by the end of the 18th century. Although it declined by the time of the counterculture of the 1960s, it remains a formal fashion accessory. A collapsible variant of a top hat, developed in the 19th century, is known as an opera hat.