Young Brunette Girl Wearing Hat On The White Modern Chair

• Boater - Flat-brimmed and flat-topped straw hat, formerly worn by seamen, and now mostly at summer regattas or garden parties, often with a ribbon in club or college colors.
• Boonie hat - A soft cotton wide-brim hat commonly used by militaries. Similar to a bucket hat.
• Boss of the plains - A lightweight all-weather hat designed by John B. Stetson for the demands of the American west.
• Bowler / Derby - A hard felt hat with a rounded crown created in 1850 by Lock's of St James's, the hatters to Thomas Coke, 2nd Earl of Leicester, for his servants. Sometimes known as a derby hat.