Ku Hye-sun ( Goo Hye Sun / born November 9, 1984) is a South Korean actress, singer-songwriter, director and artist. She gained widespread recognition in the television dramas Pure in Heart (2006), The King And I (2007), Boys Over Flowers (2009), Take Care of Us, Captain (2012), Angel Eyes (2014) and Blood(2015).
Ku Hye-sun's family consists of her mother, father, and one older sister. While growing up, Ku initially dreamed of becoming a singer. She eventually formed a vocal band with college friends, but due to her gaining popularity through the internet as a model she put those goals on hold.