These sources provide a comprehensive behind-the-scenes look at the creation of the film Breakfast at Tiffany's, originating from excerpts of the book Fifth Avenue, 5 A.M. by Sam Wasson. The text details the challenges of adapting Truman Capote's controversial novel for Hollywood, including struggles with the Production Code Administration over explicit content and the difficulties of casting the lead roles, especially Audrey Hepburn as Holly Golightly. It also explores the development of iconic elements like the song "Moon River," discussing the collaboration between Henry Mancini and Johnny Mercer. Furthermore, the sources cover Audrey Hepburn's evolution as a fashion icon through her work with Hubert de Givenchy, and contextualize the film within the broader cultural shift of 1950s and 1960s America regarding sex, women’s roles, and the Hollywood star system.