Secondary school student? Nope, she's a 35-year-old actress

If there is anyone who has discovered the fountain of youth, it would be Korean actress Oh Ji Eun.

At 35 years old, the K-drama star continues to maintain a flawless and youthful appearance that many are jealous of.

According to Koreaboo, Oh looks so young that she was cast to play a high school student in KBS drama 'Unknown Woman!'

Photos circulating online show her totally immersed in her role, in a school uniform and minimal makeup.

Check out more images in the gallery above.