Top This! Her Haute Headwear

updated 04/18/2011 AT 01:00 AM EDT

originally published 04/18/2011 AT 01:00 AM EDT

The Fascinator: Defined

"People call a feathered piece that sits on a comb a fascinator," explains milliner Vivien Sheriff. Beloved by young royals, these British wedding staples have been a fave of Kate's for years. "She showed young women look great in them."

Hats off to Kate

"Kate has a great face for hats, and I think she could wear any style," says hatmaker Peter Whiteley. According to the U.K.'s Mail on Sunday, famed hat designer Philip Treacy is making "flamboyant creations" for her wedding.

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