She was born in Pusan but her family moved up to Seoul before her entrance to elementary school.
Two of her brothers, Dong Hyun Kim and Dong Hee Kim, are also actors in South Korea.
Skilled in martial arts (Taekwondo).
She holds 3rd Dan of black belt in Taegwondo.
She is the second child among 5 siblings. She has 1 sister and 3 brothers.