My Sassy Girl (Korean: 엽기적인 그녀; RR: Yeopgijeogin geunyeo; lit. 'That Bizarre Girl') is a 2001 South Korean romantic comedy film directed by Kwak Jae-yong, starring Jun Ji-hyun and Cha Tae-hyun. The film is based on a true story told in a series of blog posts written by Kim Ho-sik, who later adapted them into a novel. The film was very successful in South Korea, where it was the highest-grossing comedy of all time, and one of the top five highest-grossing films ever at the time.