Joan Fontaine vs. Olivia de Havilland
The pièce de résistance of Oscar feuds goes back to 1941, when sisters Joan Fontaine (Hitchcock's "Suspicion") and Olivia de Havilland (Melanie in "Gone with the Wind") were both up for Best Actress. Fontaine didn't want to go to the ceremony - her sister apparently shamed her into it. When Fontaine won, she froze - and her sister nudged her to "get up there." Fontaine later recalled in her memoirs that she burst into tears and "felt age four, being confronted by my older sister. Damn it! I incurred her wrath again." Well, we warned you this piece was about babies. Five years later, history repeated itself when Fontaine was a last minute replacement for Joan Crawford to present Best Actress. When de Havilland won, Fontaine offered her hand in congratulations. De Havilland infamously snubbed her, in full view of the press. The sisters are in their 90s now and haven't spoken for decades.