The private show marks the 40th anniversary of the house and will raise money for charity.
“I would be idiotic to cook [for Prince Charles and Camilla],” said the author and son of the Duchess of Cornwall.
Britain’s mischievous prince bows out of public life, with a sense of humor.
The first of what will be a series of notable partnerships is the introduction of limited-edition Finlay & Co. sunglasses and Holicow designs.
“She is obviously a powerful, sympathetic person and we have to handle her in a really cool way,” explained the director.
“Diana: Her Fashion Story,” which opens to the public on Feb. 24, showcases looks she wore during daytime public engagements as well as for evening occasions.
The show will mark 20 years since Diana’s death in Paris.
The collection, called Dior Lady Art, launches later this month at Art Basel Miami.
Countess Spencer was the stepmother of Diana, Princess of Wales and was married to Earl Spencer from 1972 to 1992.
Demarchelier’s well-known Paris exhibit, which comprised 400 photos of celebrities, is slated to open in New York next year