The Prince and Princess of Wales leave Gibraltar on the Royal Yacht Britannia for their honeymoon cruise, 31st July 1981. The Princess wears a Donald Campbell dress. (Photo by Jayne Fincher/Princess Diana Archive/Getty Images)
The Prince and Princess of Wales leave Gibraltar on the Royal Yacht Britannia for their honeymoon cruise, 31st July 1981. The Princess wears a Donald Campbell dress. (Photo by Jayne Fincher/Princess Diana Archive/Getty Images)