Here is a sampling of outfits to help you get acquanited with Hollywood Fashion Vault:
Claudette Colbert in It Happened One Night (1934)
Audrey Hepburn in Love in the Afternoon (1957)
Elizabeth Taylor in Cat on a Hot Tin Roof (1958)
Gene Kelly in Singin’ in the Rain (1952)
Rita Hayworth in Cover Girl (1944)
Rosalind Russell in His Girl Friday (1940)
Vivien Leigh in A Streetcar Named Desire (1951)
Judy Garland in The Wizard of Oz (1939)
Marilyn Monroe in Gentlemen Prefer Blondes (1953) (Take 2)
Ruby Keeler in Dames (1934)
And here are a few articles about Hollywood and fashion in general:
Top Ten MGM Musicals
Top Ten Things I Have Learned About Fashion from Hollywood
Fashion Rant: Graduation Shoes