LONDON, UNITED KINGDOM – MAY 31: Diana, Princess Of Wales talks with Dress Designer David Sassoon at a Private Viewing And Reception At Christies Of Dresses Worn By The Princess Of Wales That Are For Auction In Aid Of The Aids Crisis Trust And The Royal Marsden Hospital Cancer Fund. (Photo by Tim Graham Photo Library via Getty Images)
HEREFORD – APRIL 9: Diana Princess of Wales on a visit to Hereford Cathedral on April 9, 1985 in Hereford, Herfordshire. Her outfit was designed by Bellville Sassoon. (Photo by David Levenson/Getty Images)
LONDON, UNITED KINGDOM – JULY 22: The Princess Of Wales Arriving At The Premiere Of The Film ‘backdraft’ In Leicester Square In A Black Dress Designed By David Sassoon And Lorcan Mullany For Bellville Sassoon (Photo by Tim Graham Photo Library via Getty Images)
Princess Diana wearing David Sassoon.
LONDON, UNITED KINGDOM – MARCH 30: A pregnant Princess Diana, Princess of Wales in a red David Sassoon maternity gown attending a function at the Barbican Centre on March 30, 1982 in London. England. (Photo by Anwar Hussein/Getty Images)
LONDON – MAY: Princess Diana at the Royal Academy of Arts in Piccadilly, London in May 1984. The Princess is wearing an ’empire line’ evening gown by Bellville Sassoon. (Photo by David Levenson/Getty Images)
Diana, Princess of Wales (1961 – 1997) attends a gala concert at the Barbican Centre in London, October 1990. She is wearing a green beaded cocktail dress by David Sassoon and Lorcan Mullany of Bellville Sassoon. (Photo by Jayne Fincher/Princess Diana Archive/Getty Images)
WREXHAM – NOVEMBER 28: Princess Diana with a young boy during a visit to Wrexham, Wales, on November 28, 1982. She is wearing a coat by Bellville Sassoon and a hat by John Boyd. (Photo by David Levenson/Getty Images)
WREXHAM – NOVEMBER 28: Princess Diana during a visit to Wrexham, Wales, on November 28, 1982. She is wearing a coat by Bellville Sassoon and a hat by John Boyd. (Photo by David Levenson/Getty Images)
LONDON – MARCH : Diana Princess of Wales attends a reception for British Fashion Week at Lancaster House in London in March 1988. She wore an outfit by Bellville Sassoon. (Photo by David Levenson/Getty Images)