Famous for her work with all-female South Korean band called Girl's Day, this lead pop vocalist also had a career as an actress, appearing in such Korean television series and films as, respectively, Vampire Idol and Holly.
She released "Tilt My Head," her first single with Girl's Day, in 2010.
From 2013 to early 2014, she was one of the hosts of the popular South Korean music variety program Inkigayo (English title: The Music Trend).
A native of Seoul, South Korea, she studied broadcasting at the city's Dongduk Women's University. She briefly dated soccer player Son Heung-min.
She and Wang Feifei both became known as members of Korean girl groups (Feifei performed with Miss A).