Jun Ji-hyun. Actress: Miss Unerhört!. Jeon Ji-hyun (born 30 October 1981) is a South Korean actress and model famous for her role in My Sassy Girl. Jeon was born in Seoul, and studied in the Department of Theater and Film at Dongguk University. She began her career as a model in 1997, and after appearing in a number of TV sitcoms, her movie debut came in White Valentine (1999). This...