Question: My Sassy Girl starred what South Korean actress also known as Gianna Jun

Context paragraphs:
Jun Ji-hyun: Jun Ji-hyun (born Wang Ji-hyun on 30 October 1981), also known as Gianna Jun, is a South Korean actress.  She rose to fame 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), "The Berlin File" (2013) and "Assassination" (2015).

Kwak Jae-yong: Kwak Jae-yong (born 22 May 1959) is a South Korean film director and screenwriter.  He studied physics at Kyung Hee University.  He achieved success with his debut film "Watercolor Painting in a Rainy Day" in 1989, but the failure of his next two movies led to eight years of unemployment before a comeback with the smash-hit film "My Sassy Girl" in 2001.  He is known for his limitless fondness of love stories set in a mix of different genres.

Sassy Girl Chun-hyang: Sassy Girl Chun-hyang (; lit.  Delightful Girl Chun-hyang) is a 2005 South Korean television series starring Han Chae-young, Jae Hee, Uhm Tae-woong and Park Si-eun.  It aired on KBS2 from January 3 to March 1, 2005 on Mondays and Tuesdays at 21:55 for 17 episodes.

My Sassy Girl: My Sassy Girl (Korean: 엽기적인 그녀 ; literally, "That Bizarre Girl") is a 2001 South Korean romantic comedy film directed by Kwak Jae-yong, starring Jun Ji-hyun and Cha Tae-hyun.

Cha Tae-hyun: Cha Tae-hyun (born March 25, 1976) is a South Korean actor, singer, television personality radio DJ and director.  He is best known for his lead roles in the box-office hit comedies "My Sassy Girl" (2001), "Scandal Makers" (2008) and "Hello Ghost" (2010) as well as the television series "Jeon Woo-chi" (2012) and "The Producers" (2015).  He made his directorial debut with the variety-drama "Hit the Top" (2017), in which he also stars.

Jae Hee: Jae Hee (born Lee Hyun-kyun on May 25, 1980) is a South Korean actor.  He is best known for his leading roles in the 2004 arthouse film "3-Iron" and the 2005 television series "Sassy Girl Chun-hyang".

My Sassy Girl (TV series): My Sassy Girl (Hangul: 엽기적인 그녀 ; RR: "Yeopgijeogin Geunyeo " ) is a 2017 South Korean television drama starring Joo Won, Oh Yeon-seo, Lee Jung-shin and Kim Yoon-hye, based on the 2001 South Korean movie "My Sassy Girl" by Kwak Jae-yong, but during Joseon period.  It aired on SBS from May 29 to July 18, 2017 on Mondays and Tuesdays at 22:00 (KST) time slot for 32 episodes.

My Sassy Girl (2008 film): My Sassy Girl is a 2008 American remake of the 2001 South Korean romantic-comedy "My Sassy Girl".  It stars Elisha Cuthbert and Jesse Bradford and was directed by Yann Samuell.  Both films are based on a true story told in a series of blog posts written by Kim Ho-sik, who later adapted them into a fictional novel.  The film is set in New York City's Central Park and Upper East Side.  Samuell, describes the film as "a fable about destiny, " while Bradford described it as "a romantic comedy about how they pull each other to a more healthy place by virtue of their relationship."

My Sassy Girl 2: My Sassy Girl 2 (Chinese: 我的野蛮女友2) is a 2010 Chinese romantic comedy film directed by Joe Ma and starring Lynn Hung, Leon Jay Williams, He Jiong, Abby Feng and Bosco Wong.  The film is an unofficial sequel of the 2001 South Korean film "My Sassy Girl".  It was released on November 5, 2010.

Ryokiteki na Kanojo: Ryokiteki na Kanojo (猟奇的な彼女 ) is a Japanese television drama based on the South Korean movie "My Sassy Girl".  It narrates the story between Saburo Masaki, a marine biologist, and Riko Takami, an aspiring writer with a short temper.  While the two are at odds with each other at first, they eventually become attracted to each other and develop a relationship.  It received an average of 8.18% viewer rating throughout the series.

Supporting paragraphs: My Sassy Girl Jun Ji-hyun
Answer: Jun Ji-hyun