noun
milliner
MIL-ih-ner/ˈmɪlɪnər/
A person who designs, makes, or sells women's hats.
The milliner designs elegant hats for women attending spring weddings.

Etymology
The word probably began as Milaner, a resident of Milan, a city known for fancy wares including bonnets. Its meaning shifted from a seller of such goods to a maker or seller of hats.
In context
I can sew--trim hats--I worked with a milliner once.
More examples
- She buys her summer hats from a local milliner.
- The milliner sews a ribbon around the brim of the bride's hat.
- Two milliners display their latest women's hats in the shop window.
Forms
milliner · milliners
millinery noun — The making or selling of women's hats.
Similar words
- hatter
- Makes or sells hats, not specifically hats for women.
- hatmaker
- Makes hats of any kind, rather than necessarily selling them.