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Charlene Wittstock, Princess Sirivannavari Nariratana of Thailand, Princess Eugenie of York

Pascal Le Segretain/Getty Images; Antonio de Moraes Barros Filho/WireImage.com; Indigo/Getty Images

William & Kate's Royal Wedding

Tiaras and tulle don't have a whole lot of room in the wardrobe of a modern-day princess.

In fact, royals like Princess Eugenie of York or Princess Sirivannavari of Thailand (who dabbles as a designer herself!) are just as likely to wear pencil skirts and peep-toe heels—leaving the stuffier suits and prim pillbox hats to their elders.

Click on through to see how these noble ladies are redefining what fashionable royalty should look like.