4/10 © Getty Images

Princess Diana

Princess Di made quite the stylish move by perfectly matching her hats to her elegant ensembles. We especially loved these two looks in which she opted for pretty in pink and a striking blue and white combo.

5/10 © Getty Images

Kate Middleton

The Duchess of Cambridge has stepped out in a fair number of toppers and fascinators. Whether she’s sporting a simply chic hat or an over-the-top style, the 37-year-old royal never fails to look stunning.

6/10 © Getty Images

Duchess of Cornwall

The Duchess of Cornwall manages to look as regal and put-together in a bold purple ensemble as she does in a toned-down taupe look.

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