from Allkpop...
7 male actors who don't look their age.
I first encountered this guy when I watched 'You Who Came From The Stars' in which he - very convincingly - plays a high school student! I thought, "Hey, here's a fresh new face. Must be a young, up-and-coming actor recently discovered from modeling," or something along those lines. I thought he was much younger than myself, but oh, was I mistaken. He was not the 17-year-old boy I imagined him to be but rather a 26-year-old adult turning 27 this year in July.
(D.O.B: July 1, 1987)
Do you know what that means?? That means I thought he was an entire decade younger than his real age! How does he look that young... No wonder he could pull off a high schooler role without raising suspicions. Even in his photo shoot with Park Shin Hye, I had no idea he was the older one (she's born 1990). This makes him one year older than co-star Kim Soo Hyun, which is completely mind-boggling, although...
there is also: Kim Soo Hyun (looks younger born 1988), Beast Doojoon (born in 1989 but has mature look), JYJ Jaejong (looks younger than his age born in 1986), Choi CHin Hyuk (looks much 'older than age' born in 1986), of course the cutest... Song Joong Ki (looks much younger than age born 1985) and, the king....Yoo Yun Sook (who would believe be will be 30 years old, born in 1984).