The Philadelphia Story (1940)

Katharine Hepburn starred in the Broadway production of the play on which this film was based and owned the film rights to the material; they were purchased for her by billionaire Howard Hughes who gave them to her as a gift. Cary Grant, meanwhile, demanded a $100,000 salary--a huge amount at the time. As it turned out, however, he donated his entire earnings to the British War Relief Fund.