Kim Sul-song (born December 30, 1974), or Kim Seol-song, is the daughter of Kim Jong-il and Kim Young-sook. Thus she is the half-sister to Kim Jong-un (current leader of North Korea). She has reportedly been active within the propaganda department, been in charge of literary affairs, and in charge of security and schedule of her father as his secretary.
"Seol-song" literally means "snow pine," and the name was reportedly given by her grandfather Kim Il-sung.
Reportedly, Sul-song was a favorite of her father. She attended the same school as her father, graduated from Kim Il-sung University's Economics Department, and she was assigned to the propaganda department of the Workers' Party Central Committee. She is also reported to have been in charge of literary affairs: According to reports, all the signatures on works of literature coming into the department were signed by her.
According to a North Korean defector (who used to be a high-ranking official in Pyongyang), Sul-song was in charge of security and schedule for Jong-il since the late 1990s. In this capacity, she accompanied her father during trips to North Korean Army units and local villages. During these trips, she has been observed wearing the uniform of a lieutenant colonel of the North Korean People's Army.
Sul-song was described by a North Korean defector as "intelligent" and "beautiful"; she had hair down to her waist and is 1.65 meters (5 ft 5 in) tall (considered tall for a North Korean woman).
According to a Korean intelligence official, Sul-song was a student in Paris, France, in the autumn of 2005.