About Chae Seo-jin
Kim Ko-woon, known professionally as Chae Seo-jin (채서진), is a South Korean actress. She started her career as a young actress in Over the Rainbow (2006). She is known to be Kim Ok-vin's sister. In May 2016, Chae decided to use Chae Seo-jin as her stage name instead of her birth name, Kim Ko-woon. In 2011, Chae made her musical debut in Catch a Timid Man. Kim Ko-woon (Korean: 김고운; born 30 April 1994), known professionally as Chae Seo-jin (채서진), is a South Korean actress. Chae started her acting career in 2006 where she played young Jung Hee-soo in Over the Rainbow.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.