Where is the party?

Sigrid is always looking for a party.
She is a real party girl

Partyhat

A partyhat is a conical hat, similar to the Dunce cap, typically worn at birthday parties. It is frequently emblazoned with bright patterns or messages.

A fascinating fascinator

Fiffi is a fascinating model, here dressed in a
fascinator

Fascinator

A fascinator is a small hat commonly made with feathers, flowers and/or beads. It attaches to the hair by a comb, headband or clip.

A sombrero provides good sun protection

Anita shading under a Sombrero

Sombrero

A Sombrero is a Mexican hat with a conical crown and a very wide, saucer-shaped brim, highly embroidered made of plush felt.

Do bunny boilers wear a toque?

Mona doesn't like cooking, but she is a true bunny boiler

Toque

A toques is a tall, pleated, brimless, cylindrical hat traditionally worn by chefs.

A porkpie can be a hat

Susy  wearing a porkpie

Porkpie

A porkpie is a felt hat with low flat crown and narrow brim.

Is there anything called cow girls?

A stetson hat makes you  a cow girl

Boss of the plains

Boss of the plains is a lightweight all-weather hat with a high rounded crown and a wide flat brim, designed by John B. Stetson for the demands of the American west.

A green beret in operation

Lisa in her green beret

Beret

A beret is a soft round cap, usually of wool felt, with a bulging flat crown and a tight fitted headband with no brim, worn by both men and women and traditionally associated with France. Also used in the military.