These premium felt green top hats are great for Saint Patrick's Day and all Irish occasions! The top hat is now usually worn only with morning dress or white tie, as servants' or doormen's livery, or as a specific rock culture fashion statement. Top hats took over from the tricorne at the end of the 18th century. Within twenty years they became popular with all social classes, with even workmen wearing them. Even policemen and postmen adopted them to give them the appearance of authority.