#6: Joan Crawford (What Ever Happened to Baby Jane?, 1962)
Joan Crawford, an iconic figure in the film industry, had a feud with her co-star Bette Davis during the filming of What Ever Happened to Baby Jane? Their rivalry escalated to the point where Crawford made it difficult for Davis to perform her scenes. In a particularly cruel moment, she filled her pockets with rocks so that Davis had to drag her weight while filming.

