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7th April 1965: Yves Saint-Laurent, ex-wonder boy of Dior, working with a fashion model at his own fashion house in Paris. (Photo by Reg Lancaster/Express/Getty Images)

7th April 1965:  Yves Saint-Laurent, ex-wonder boy of Dior, working with a fashion model at his own fashion house in Paris.  (Photo by Reg Lancaster/Express/Getty Images)