Jiyoon born as Shin Ji-yoon (신지윤) is a South Korean singer and dancer under Play M Entertainment. She is the Lead Vocalist and Lead Dancer in the group and also a Rapper. Jiyoon was born on March 2, 2002 in Bundang, Seongnam, South Korea. Jiyoon was a former contestant of MIXNINE along with Soojin where she was eliminated and ranked 44th. On Oct 24, 2018 she was officially revealed as a member of Weeekly.