Millinery
From Encyclopedia Jr, free information reference for Kids
Millinery is hats and other articles sold by a milliner, or the profession or business of designing, making, or selling hats and hat trim. A milliner is one who designs, makes, sells or trims hats.
Millinery, if taken in a more general sense, also means any accoutrements that are functionally unnecessary, such as a garnish on a dish, or the extra cuff-buttons on a man's dress jacket.