Choi Yoo-jung is a South Korean singer known as Yoojung. She debuted as a member of I.O.I in May 2016 after achieving third place in the 2016 survival program Produce 101. She was also a member of WJSN. Later, she debuted with Weki Meki in August 2017. Yoojung debuted as a solo artist in 2022 with the single album Sunflower. She is known for her popular songs Sunflower (P.E.L) and OWL.