They Grow Up So Fast! From Jake Gyllenhaal to Elijah Wood, Former Kid Stars Then and Now

He's been a professional actor since childhood, but Jake Gyllenhaal truly comes of age in his latest movie 'Nightcrawler,' delivering a transformative performance that has already earned him comparisons to Robert De Niro. Staring at his gaunt, haunted face, it's almost hard to believe that he was once the same wide-eyed tyke who grabbed attention in movies like 'City Slickers' and 'Josh and S.A.M.' And if you saw Scarlett Johansson in 'Lucy' or Haley Joel Osment in 'Tusk,' you know that Gyllenhaal's not the only former kid actor looking very different from his younger self these days. Here's visual proof of how much Hollywood's current crop of 40-and-under stars have grown up since their early roles.