Zac Efron's Stunning Transformation in 'The Iron Claw'

Zac Efron discusses his "jarring" transformation for the film 'The Iron Claw,' where he plays professional wrestler Kevin Von Erich. Efron put on pounds of muscle, wore a shaggy wig, and donned tiny wrestling shorts for the role. He expressed gratitude for the support of Kevin Von Erich, the real-life counterpart, and admitted to being nervous about his reaction to the film. The movie follows the true story of the Von Erich brothers and their success in professional wrestling in the early 1980s. 'The Iron Claw' hits theaters on December 22.