The 27-year-old actor looked unbelievable – tan and chizzled – while watching as Robert, 71, got down on the ground and did some push ups.
This movie looks amazing! If you missed it, you have to check out the photos of Zac running around in nude colored undies showing off everything he’s got earlier this week for the film.
50+ pictures inside of Zac Efron and Robert De Niro shirtless together for their movie… More Here! »