Koo Hye-Sun is a South Korean popular actress, who has recently gained fame in the hit drama, Pure in Heart (열 아홉 순정) as a starring role, Gukhwa and also sang the title song of it. She is well-known for portraying Geum Jan Di in KBS 2TV's drama Boys Before Flowers together with Lee Min Ho, Kim Hyun Joong, Kim Bum and Kim Joon. Koo Hye-Sun also starred in many other roles.
Koo hye sun is in YG Entertainment. She had her debut in drama by appearing in 2005's Nonstop 5.
* Name: 구혜선 / Koo Hye Sun (Gu Hye Seon)
* Profession: Actress, singer and author
* Birthdate: 1984-Nov-09
* Birthplace: Incheon, South Korea
* Star sign: Scorpio
* Talent agency: YG Entertainment
* Education: Shin Chon Elementary School, Bu Pyeong Dong Elementary School, Bu Heung Middle School, Bu Pyeong Girls' High School, Seoul Art College
