SBS's "Running Man" castmates Lee Kwang Soo and Song Joong Ki proved themselves to be of the same age despite what netizens seem to think. Lee Kwang Soo uploaded a picture of themselves on December 17th along with the tweet, "With my best friend Joong Ki before the filming for 'Running Man'~! We are the same age!^^". However, and maybe it's because of Song Joong Ki's milky baby skin, Lee Kwang Soo seems to look a bit older, as reflected by netizens commenting, "No matter how hard I try to picture it...," "Okay, maybe not same age...," "Lee Kwang Su, find strength!," and "Song Joong Ki looks a lot younger by comparison." Source: TV Daily via Nate