Jun Ji-hyun (born 30 October 1981), also known as Gianna Jun, is a South Korean actress. She is best known for her role as "The Girl" in the romantic comedy My Sassy Girl (2001), one of the highest grossing Korean comedies of all time. Other notable films include Il Mare (2000), Windstruck (2004), The Thieves (2012), and The Berlin File (2013).