But 2005 would become Lee's breakout year. She showcased her versatility in two successful, but very different series. In "Green Rose", her character falls in love with a man who gets framed for the attempted murder of her father; years later, she becomes slowly convinced that a doppelgänger is in fact, her boyfriend whom everybody had assumed was dead. "Green Rose" is her first TV series produced by SBS, Lee reunited with her Lotus Flower Fairy co-stars Jung Hye-sun and Han Jin-hee in "Green Rose". In "My Girl", she played a lovable con artist who agrees to act as a hotelier's long-lost cousin in order to fulfill his grandfather's last wishes. "My Girl", in particular, shot Lee to domestic and Korean Wave stardom.