Hepburn was in particular associated with French fashion designer Hubert de Givenchy, who was first hired to design her on-screen wardrobe for her second Hollywood film, "Sabrina" (1954), when she was still unknown as a film actor and he a young couturier just starting his fashion house. Although initially disappointed that "Miss Hepburn" was not Katharine Hepburn as he had mistakenly thought, Givenchy and Hepburn formed a lifelong friendship. She became his muse, and the two became so closely associated with each other that academic Jayne Sheridan has stated "we might ask 'Did Audrey Hepburn create Givenchy or was it the other way around?'"