Gu Hye Seon is a South Korean actress, singer, songwriter, and director. She is best known for her roles in the television dramas "Pure in Heart", "Boys Over Flowers", "Angel Eyes", and "Blood". Hye Seon entered the entertainment industry after gaining popularity on the internet as an ulzzang (meaning "best face" or "good-looking"). She began her acting career in one-act dramas and the sitcom "Nonstop 5". She was also co-MC with Super Junior's Heechul on SBS's weekly live music show "Inkigayo" from April 23, 2006 to February 18, 2007. Hye Seon soon rose to fame in the drama "Pure in Heart" and surprised critics with her performance in the historical drama "The King and I".