The Princes of Wales, wearing a pale blue strapless Catherine Walker gown, attending a ball for the Birthright charity at the Savoy Hotel, London, March 1989. (Photo by Princess Diana Archive/Getty Images)
The Princes of Wales, wearing a pale blue strapless Catherine Walker gown, attending a ball for the Birthright charity at the Savoy Hotel, London, March 1989. (Photo by Princess Diana Archive/Getty Images)