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BALMORAL, SCOTLAND - AUGUST 18: Diana, Princess of Wales, Prince William, and Prince Harry play on the banks of the River Dee, near Balmoral Castle.during a Summer vacation, on August 18, 1987, in Balmoral, Scotland. (Photo by Julian Parker/UK Press via Getty Images)

BALMORAL, SCOTLAND  -  AUGUST 18:   Diana, Princess of Wales, Prince William, and Prince Harry play on the banks of the River Dee, near Balmoral Castle.during a Summer vacation, on August 18, 1987, in Balmoral, Scotland. (Photo by Julian Parker/UK Press via Getty Images)