Girls' Generation's member Sooyoung revealed a picture taken with her older sister who is a musical actress.

Today, Sooyoung posted on her fan page two pictures with her older sister Choi Soo Jin, saying, "I went to go watch a musical."

The first picture was a self-camera photo with her sister, and the second was with Lee Jong Hyuk who is also a cast of the musical.

Internet users who saw this commented, "They really look alike," etc.

Photo Credit: Sooyoung Fan Page