The process combines growing trees and bushes with sugar beats over a long term.
The Chambre Syndicale de la Haute Couture has selected five new guest members for the July shows in Paris.
The French designer will oversee the house’s couture collections, ready-to-wear lines and men’s and women’s accessories.
Guests including Valentino Garavani attended the presentation of the line designed by socialites Bianca Brandolini and Eugenie Niarchos.
The socialites have collaborated with the house’s ateliers on a party-themed collection to be unveiled during Paris Couture Week.
The house said it would announce a new creative director soon following the departure of Arnaud Maillard and Alvaro Castejón.