South Korean singer best known for being the first leader of the K-pop group T-ara. She is also a popular actress, having starred on series like Dream House and in films like White: The Melody of the Curse.
She won the Little Miss Korea pageant and age seven and later took performance classes at Dongguk University.
She was dropped from the drama Five Fingers for refusing to do product placement.
Her mother is a former piano teacher who later became Hahm's agent.
She and Jeon Boram have both been members of T-ara.