He wears a frock coat, striped trousers and a bicorn hat.
From the newscientist.com
I half expected Beck to appear before the crowd in a bicorn hat, with one hand tucked into the front of his jacket.
From the dailyherald.com
I half expect Beck to appear before the crowd in a bicorn hat, with one hand tucked into the front of his jacket.
From the thenewstribune.com
Carrying riders in dazzling red and blue tailcoats and black bicorn-style hats, the horses perform to classical and contemporary music while an emcee explains their movements.
From the timesunion.com
More examples
Having two horns or horn-shaped parts; "a bicornuate uterus"
A cocked hat with the brim turned up to form two points
In geometry, the bicorn, also known as a cocked hat curve due to its resemblance to a bicorne, is a rational quartic curve defined by the equation
Bicorn (Also known as Burrowing Bicorn, Bicrone) is a mythological creature with two horns that has the reputation of devouring kind-hearted and devoted husbands, and is thus plump and well fed. ...
A mythical creature said to grow fat on the flesh of devoted husbands. A female bicorn is known as a chichevache.
[also Bicorne]: cocked hat (two-cornered); often with a cockade at the front. Some forms of bicorn were designed to be folded flat, so that they could be conveniently tucked under the arm when not being worn.