3) Olivia de Havilland and Joan Fontaine
Sibling rivalries are one thing, but the tension between Olivia de Havilland and Joan Fontaine transcended family squabbles. The sisters, both Oscar-winning actresses, often competed for roles and accolades, leading to decades of estrangement. Their feud made headlines, particularly when Olivia famously refused to reconcile with Joan in their later years.
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Edited by Priscillah Mueni