Hatmaking is the manufacture of hats and head-wear. Millinery is the designing and manufacture of hats. A millinery shop is a store that sells those goods.

A milliner or hatter designs, makes, trims, or sells hats.

Millinery is sold to women, men and children, though some definitions limit the term to women's hats.[1] Historically, milliners, typically female shopkeepers, produced or imported an inventory of garments for men, women, and children, including hats, shirts, cloaks, shifts, caps, neckerchiefs, and undergarments, and sold these garments in their millinery shop.

More recently, the term milliner has evolved to describe a person who designs, makes, sells or trims hats primarily for a female clientele.

The origin of the term is probably the Middle English milener, meaning an inhabitant of the city of Milan or one who deals in items from Milan,[2] known for its fashion and clothing.