The 39-year-old actor, who's almost never without at least a little stubble on his jaw, was rendered nearly unrecognizable by the change.
With his smooth chin, green cargo pants, and black backpack, he looked a good 10 years younger, reported Us magazine.
Earlier this year, he let his beard grow while filming the upcoming movie 'American Sniper', based on the life and career of military vet Chris Kyle.