Olivia de Havilland was the first of the sisters to take up acting and make it in show biz, but younger sister Joan Fontaine (legend has it that the mother favoured Olivia and made Joan take a different name) soon would follow. Apparently, from the very start, these two siblings were rivals. Stories about Olivia ripping her hand-me-downs so little sis could not wear them are part of this legendary rivalry. The two sisters were both nominated for an Oscar in 1941, and Joan ended up winning (the only actor in any Hitchcock film to ever take home the award) and legend (again) has it that de Havilland's congratulatory gesture was brushed off by Fontaine as she made her way to the stage. This action would be repeated in the opposite direction when de Havilland won the first of her two Academy Awards. Now as far as I know, this rivalry never stooped to any sort of Baby Jane-esque level, but it has lasted until this very day, as Olivia in Paris and Joan in Carmel-by-the-Sea California, 96 and 94 respectively, have reportedly not spoken with each other since 1975 - apparently due to a final riff over their mother's death. Supposedly Fontaine has an estranged relationship with her children as well, apparently over them keeping in contact with their aunt. Of course this could all be just tall tales - both ladies have alluded to it originally being a publicity stunt that just went awry - but I believe it to be true - at least at this point. What may have started as a funny romp, has certainly become a living breathing feud lo these many decades.