Apparel is the term used to describe pieces of material that are crafted to be worn on the body. Apparel items include (but are not limited to): Tops, Bottoms, Skirts, Shorts, Sweaters, and Swimsuits.
About Hats:
Hats are a piece of material worn on the head to provide warmth to the wearer's head or Hats may be worn for aesthetic reasons as a fashion accessory.