Millinery is the craft of designing, making, and selling HATS and other HEADGEAR. It is an ancient art form that has been practiced for centuries, and is still popular today. Millinery involves creating a wide variety of styles, from traditional to modern, and from casual to formal. The two crossword solutions, HEADGEAR (8 letters) and HATS (4 letters), refer to the items created by milliners. HEADGEAR includes any type of hat, cap, or other item worn on the head, while HATS specifically refer to the more traditional styles of HEADGEAR.