Real-Life Sisters Rooney and Kate Mara Share the Screen — and a Single Voice — in New Herzog Film

Rooney Mara and Kate Mara, sisters in real life, took on an unusual acting assignment for Werner Herzog's new drama "Bucking Fastard": delivering their dialogue in perfect unison. The two said the synchronized speech came together with little difficulty, describing the process as something that fell into place naturally rather than through heavy rehearsal. The film marks a rare on-screen pairing of the siblings, whose performances hinge on matching not just their scenes but their timing and delivery down to the word.

With reporting from Variety.