Fascinators…

...is a headpiece, a style of millinery. The word originally referred to a fine, lacy head covering akin to a shawl and made from wool or lace.

In the early 21st century, the term has made a comeback, but the meaning has slightly changed; it is now used to describe a delicate, slightly-to-very frivolous head decoration worn almost exclusively by women.

A fascinator may be worn instead of a hat but to occasions where hats were traditionally worn — such as weddings in the U.K. — or as an evening accessory, when it may be called a cocktail hat. It is generally worn with fairly dressy attire.

Modern fascinators are commonly made with feathers, flowers and/or beads.

They attach to the hair by a comb, headband or clip. They are particularly popular at premium horse-racing events, such as the Grand National and the Melbourne Cup.

Brides may choose to wear them as an alternative to a bridal veil or hat, particularly if their gowns are non-traditional.

Fascinators are best attached with a hat pin; however, many contemporary designs feature clips and combs.

They are available pre-made (and may be quite expensive if sold by established millinery designers) but are also quite easy and cost-effective to make at home.

They are also sold in kit form.