Lee Jooyeon was an ulzzang, the visual, vocalist and lead dancer of the girl group After School and is an actress. Her unofficial first debut appearance was on December 29, 2008 at the SBS Gayo Daejun, performing "Play Girlz" with label mate Son Dam Bi on stage. She officially debuted on January 17, 2009 on MBC's Music Core live as an After School member under Pledis Entertainment. She made her acting debut in the drama Smile Again. In 2011 Jooyeon graduated from Dongduk Women's University with a major in broadcasting. She graduated on February 22. As of 2018, she is signed under Mystic Actors for her acting endeavors.