Two-cornered hat (bicorne), c. 1789 - c. 1810.
After the French Revolution (1789), the three-cornered hat (tricorne) –
the symbol of the previous government
known as the Ancien Régime – fell out of favour. However, a large
two-cornered model, the bicorne, remained fashionable until around 1810.
It was also called a corsair after its most famous wearer, Napoleon
Bonaparte, who came from Corsica. This hat is made of beaver fur felt,
which was expensive and very popular.