Princess Diana's summer vacation style: one-pieces, dresses and more

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Princess Diana wades in the crystal-clear water on her 1990 vacation to the British Virgin Islands. Photo: Getty Images

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Honeymoon in the Mediterranean: Newlyweds Charles and Diana depart Gibraltar on the Royal Yacht Britannia on July 31, 1981. (The bride wore a Donald Campbell dress.) Photo: Getty Images

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Family vacation in Majorca: Charles and Diana pose for a group photo with Princes William and Harry and the Spanish royal family (including King Juan Carlos I and Queen Sofia of Spain) in August 1987. Photo: Getty Images

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The royal pair toured Bangkok, Thailand, by river boat in February 1988. Photo: Getty Images

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Diana with a young Harry and William in Majorca, a favorite summer vacation spot, in August 1988. Photo: Getty Images

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By the seashore: Diana, William and Harry goof around in the sand on a family trip to Necker Island in April 1990. Photo: Getty Images

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Diana spent January 1993 at Nevis Island's Indian Castle Beach in the West Indies with sons William and Harry. Photo: Getty Images

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Diana scored major mom points in August 1993 when she took the kids to Disney World in Orlando and even braved Splash Mountain's 53-foot drop. (That's her all the way in the back; Prince Harry is in front, at the left.) Photo: Getty Images

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Diana stopped by the famous Pyramids in Giza while visiting Egypt in May 1992.

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She also walked through Egypt's ancient Temple of Karnak. Photo: Getty Images

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Majorca, 1990: Diana set sail on Spanish King Juan Carlos' yacht for a family vacation. Photo: Getty Images

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More Majorca: Diana enjoyed sun and sea in August 1990 alongside a regal crew including Spain's King Juan Carlos and Queen Sofia and Greece's King Constantine and Queen Anne-Marie. Photo: Getty Images

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Diana and Prince William vacationed with Dodi Al Fayed (not pictured) in St. Tropez, France, days before Diana and Dodi died in a Paris car crash in August 1997. Photo: Getty Images

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Diana soaked up the rays on a yachting trip with the Greek royal family, circa 1990. Photo: Getty Images