Katharine Hepburn is a professional actress.
Katharine Hepburn . Hepburn masterminded her own comeback , buying out her contract with RKO Radio Pictures and acquiring the film rights to The Philadelphia Story , which she sold on the condition that she be the star . The Philadelphia Story (play) . Written as a vehicle for Katharine Hepburn , its success marked a reversal of fortunes for the actress , who was one of the film stars deemed `` box office poison '' in 1938 .