Kate Middleton's most memorable outfits (18 images)

The Duchess of Cambridge often makes headlines for her polished style, impeccable hair and penchant for hats. This gallery features some of Kate Middleton's best looks since she became part of the royal family.

Prince William and his wife Kate, the Duke and Duchess of Cambridge, arrive for the BAFTA Brits to Watch dinner at the Belasco Theatre in downtown Los Angeles on July 9, 2011. UPI/Jim Ruymen

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Britain's Catherine, Duchess of Cambridge, attends the St. Andrews 600th Anniversary Dinner at the Metropolitan Museum of Art, on December 9, 2014 in New York. UPI/Jason DeCrow/Pool

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Prince William and his wife Kate arrive on Parliament Hill for Canada Day celebrations in Ottawa, Canada on July 1, 2011. The British royal couple's nine-day tour of Canada is their first official overseas assignment together. UPI/Christine Chew

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Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge attend the Royal film performance of 'Mandela: Long Walk to Freedom' at The Odeon Leicester Square in London on December 5, 2013. UPI/Paul Treadway

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