ristin (Hangul: 프리스틴; stylized as PRISTIN; formerly known as Pledis Girlz) is a South Korean girl group formed by Pledis Entertainment in 2016.
Several members of the group appeared on the television show Produce 101 and, as the prize for becoming two of the top contestants, members Nayoung and Kyulkyung went on to debut as part of the project girl group I.O.I. The group is composed of ten members: Nayoung, Roa, Yuha, Eunwoo, Rena, Kyulkyung, Yehana, Sungyeon, Xiyeon and Kyla.
The group debuted on March 21, 2017 with their first EP Hi! Pristin