The most formal evening attire for a gentleman; Full Evening Dress. Also known as Evening Tails.
Worn at very formal balls, formal civic functions and occasionally to the opera. It is also worn at some Evening Weddings, and on stage if you dance on Strictly Come Dancing. The tailcoat must be black and cannot be buttoned up.
White Tie Accessories
Always worn with a white waistcoat, made from cotton pique, white dress shirt with a wing collar and bib; and matching white bow tie. The matching trousers have double silk braids on the outside seams and are never worn with turn-ups. The trousers have to have a high waistband to ensure that the waistcoat covers them, so they are supported by braces.
A white silk scarf should not be worn, except with an overcoat. A silver topped cane and a silk top hat used to complete the picture, but now this is very rare, as are white gloves. But white gloves are a requirement at certain grand civic functions.