Chae Seo-jin (born Kim Ko-woon on April 30, 1994) is a South Korean actress. She is known to be Kim Ok-vin's sister.
Known For: Acting
Birthday: 1994-04-30
Place of Birth: Suncheon, South Jeolla Province, South Korea
Also Known As: 채서진, 김고운, Kim Ko-woon, 蔡舒辰