South Korean singer and actress best known as the youngest member of Girl's Day. She is also notable for her television career, which includes roles in the SBS shows Tasty Life and Hyde, Jekyll, Me, and in the MBC program Real Men.
She and her sister stayed with her grandmother mainly as her mother would go to work. After studying at the Seoul School of Performing Arts, she entered the film program at Konkuk University.
In 2013, she had an eight-month relationship with H.O.T. boy band member Tony An. She has a sister two years younger than her.
She and her sister grew up in Gwangju, South Korea. Since 2017, she has been dating her Reply 1988 co-star Ryu Junyeol.
She and Kim Yura both rose to fame as members of Girl's Day.