Cinderella's Sister) is a 2010 South Korean television series starring Moon Geun-young, Chun Jung-myung, Seo Woo, and Ok Taec-yeon.

[1][2][3] Applying a modern twist to the classic fairy tale, the story follows the contentious relationship between two stepsisters as their lives and loves intertwine.

Both Dae-sung and his daughter, bubbly spoiled princess Hyo-sun (Seo Woo), warmly welcome wary young Eun-jo into their sprawling home, and treat her with a kindness that she simply can't stomach.

Eight years later, Jung-woo (Ok Taecyeon) reappears in Eun-jo's life, a boy she used to treat as her little brother who is now a young man determined to win her heart.

Reluctant sisters Eun-jo and Hyo-sun both experience angst and rivalry, as their polar-opposite personalities and love-hate relationship bring them through many ups and downs from adolescence to adulthood.