Girls' Generation Sooyoung is transforming into actress Choi Soo Young.

Choi Soo Young has a very important supporting role in the tvN drama "The 3rd Hospital" and the image shows her as a young high school student in what looks like a flashback. She plays violist Lee Eui Jin who is secretly in love with genius Eastern medicine doctor Kim Seung Hyun (Oh Ji Ho). On the episode to air this Wednesday, we will see Sooyoung as a high school girl in one of Seung Hyun's flashbacks that details how they first met.

Sooyoung is stealing the viewers' attention with how young she looks as a high school student, and her style is particularly cute and innocent. 

Internet users said, "Sooyoung looks so young!" "She looks really good in the white uniform!" "She could totally just go to school like that!"

tvN "The 3rd Hospital" is the first drama that deals with the conflicts between eastern and western medicine in the same hospital and follows two brothers as they compete each other in work and in love.