Which actress played Holly Golightly in 'Breakfast at Tiffany's'?

Audrey Hepburn played Holly Golightly in 'Breakfast at Tiffany's' (1961), becoming one of her most iconic roles. Interestingly, Truman Capote, author of the original novel, wanted Marilyn Monroe for the role. The black Givenchy dress that Hepburn wears in the film sold at auction for $807,000 in 2006.