Scott Eastwood might soon be giving Brad Pitt a run for his money in the hunk department. Clint Eastwood's 27-year-old son posted a picture to his Instagram page of him flexing his muscles—while shirtless, natch—in front of a massive World War II-era tank on the set of his new movie, Fury, toplining Pitt and Shia Labeouf. "Trying to out flex the tank. Not working," he wrote in the caption. Scott, of course, has taken the Internet by storm the past couple of weeks with a series of shirtless pics and a nautical-themed spread in the October issue of Town & Country. And no doubt with a role in David Ayers' forthcoming war drama, his star in Hollywood is rising—and,...