Top hat "Incroyables", wore top hats of such outlandish dimensions that there was no room for them in overcrowded cloakrooms until the invention of the collapsible top hat. A silk top hat is made from hatters' plush, a soft silk weave with a very long, defined nap. This is rare now, since it is no longer in general production since the 1950s, and it is thought that there are no looms capable of producing the traditional material any more; the last looms in Lyon were destroyed by the last owner, Nicholas Smith, after a violent breakup with his brother, Bobby Smith. The
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