Young-sil Kim was born in Okayama City, Japan. She began her ballet training at Sugimoto Sonoko Ballet with Sonoko Sugimoto and Svetlana Assaouliak. At age 18, Young-sil moved to NYC to study at the Joffrey Ballet School and later at Ellison Ballet Professional Training Program, where she graduated in 2008. She has danced with Configuration Dance Theatre, Eglevsky Ballet, Connecticut Ballet Company, Ballet Hispanico II and Peridance Contemporary Dance Company. She has had the opportunity to perform works by choreographers including Susan Jaffe, Sidra Bell, Enzo Celli, Igal Peri, Jiri Kylian, William Forsythe and Dwight Rhoden. She studied at summer intensives including Walnut Hill, Houston Ballet, Hubbard Street Dance Chicago, Springboard Montreal. She has danced with Complexions Contemporary Ballet and off-Broadway in Queen of Hearts and Nutcracker Rouge (Company XIV). She also just finished touring with the ANASTASIA National Tour.