Lee Hyun Woo may be a grown up boy now but before hew as starring in "Master of Study," and "Secretly, Gently," Lee was a child actor playing in huge roles in works like "The Legend," "King Seojong the Great," and "Queen Seondeok." As the cutie pie got older he took on musical theater and even dipped his hand in hosting the music program, "Music On Top" alongside Doojoon from B2ST. His biggest role to date has been the box office smash hit "Secretly, Greatly" where he played a North Korean spy disguised as a high school kid. Check him out then and now:
Yeo Jin Goo is just 16 years old but he's managed to snag roles since he was a wee bit kid. Yeo is best known for his stints in "Giant, "Moon Embracing the Sun," and "Missing You." He took on his first male lead character in the thriller, "Hwa-yi-." We're all still hoping that he and fellow child actress Ha Yeon Soo fall in love and procreate. Can you imagine how insanely cute their kids would be?
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You know her now as a member of f(x), but Sulli was once a well known child actress. She's starred in "The Ballad of Seodong," "Love Needs a Miracle," and "BABO." Last year, Sulli acted alongside SHINee's Minho in the drama, "To the Beautiful You." Look how adorable she was and how insanely cute she still is now!
Child model and actor Yoo Seung Ho made his film and drama debut in "The Way Home" and "Daddy Fish." Since then, he's starred in a string of films and dramas, including music videos where he played the male lead. He's had quite the successful career for such a young lad and though he's currently serving his mandatory military service, we know that when he finishes, he'll be welcomed back with open arms.