The adorable child actor Yeo Jin Goo has grown up to be a very hot guy in his twenties.

The actor is turning 20 years old on his birthday in August and to commemorate his coming of age, Yeo Jin Goo exposes his abs for the very first time in "Eastern Trends" magazine for its February issue.

Yeo Jin Goo shares his thoughts about his adult transition and his mature view of his life and career in the interview included. The photo spread from the pictorial will be a feast of Yeo Jin Goo's sharp and masculine image as he welcomes his coming of age this year.

Time sure flies fast. He's no longer the adorable child actor we know and has grown beautifully as a man.