Watch: Jennifer Aniston Has Hilarious Reaction to Learning Reese Witherspoon's Real NameReese Witherspoon isn't hiding any big little lies about Gone Girl. The Oscar winner detailed how David Fincher, who directed the 2012 movie adaptation of Gillian Flynn's best-selling thriller, staunchly disagreed with casting her as Amy Dunne, the role that ultimately went to Rosamund Pike. "David sat me down-and this is not on David-but David's like, 'You're totally wrong for this part,'" Reese explained on the Sept.