Before her acting debut on a television drama series, Moon filmed several commercials and modeled for various magazines.
She started modeling at the age of 12, and first appeared onscreen on the 1999 documentary drama On the Road directed by Choi Jae-eun.
And i feel like this drama portrayed that pretty perfectly. After watching this Moon Geun Yong became one of my favorite actresses of all time. Affectionately called the "Nation's Little Sister," Moon began modeling at the age of 10, then made her acting debut in 1999 as a child actress.She first rose to stardom through her role as the young Eun-suh in the hugely popular television drama series Autumn in My Heart (2000), followed by a well-received turn in Kim Jee-woon's critically acclaimed horror film A Tale of Two Sisters (2003).With great lines, heartfelt scenes, and exceptional acting, Cinderella's Stepsister has been praised as the most beautifully compelling drama of 2010.A modern adaptation of the classic fairytale “Cinderella,” “Cinderella's Stepsister” is the story of the stepsister who must overcome her past to find her true colors.