Girls' Generation's Sooyoung showed her support for her sister, musical actress�Choi�Soo Jin.

Jung Wook Jin uploaded a photo of the three posing for a photo at the musical venue via his Facebook.

In the revealed photo, Sooyoung can be seen smiling brightly between her gorgeous sister and Choi Wook Jin while throwing a 'V'-sign at the camera.

Netizens who saw the photo commented, "Both sisters are beautiful," "Looking�luminous in a quick photo as expected from a celebrity," and "I will also go to see Soo Jin's musical".

In related news, Soo Jin is currently playing the role of Eungyung in the musical 'Propose'.

Source & Image: Sports Donga via Naver