Top hat top hat is a hard, black silk hat, with fur now often used. The acceptable colors of hats are much as they have traditionally been, with "white" hats (which are actually grey), a daytime racing color, worn at the less formal occasions demanding a top hat, such as Royal Ascot, or with a morning suit. In the U.S. top hats are worn widely in coaching, a driven horse discipline as well as for formal riding to hounds. The collapsible silk opera hat, or "crush hat", is still worn on occasions, and black in color if worn with evening wear as
Top hat part of white tie, and is still made by a few companies, since the materials, satin or grosgrain silk, are still available. The other alternative hat for eveningwear is the normal hard shell. In formal academic dress, the Finnish and Swedish doctoral hat is a variant of the top hat, and remains in use today. The British-American musician Slash has sported a top hat since he was in Guns N' Roses, a look that has become iconic for him. Panic! at the Disco's Brendon Urie is also a frequent wearer of top hats. He has been known to wear them