PRISTIN (Hangul: 프리스틴; formerly known as Pledis Girlz) was a ten-member South Korean girl group formed by Pledis Entertainment in 2016. The group was composed of: Nayoung, Roa, Yuha, Eunwoo, Rena, Kyulkyung, Yehana, Sungyeon, Xiyeon and Kyla. Seven members of the group appeared on TV show Produce 101, two of them Nayoung and Kyulkyung debuted as part of the project girl group I.O.I after becoming two of the top eleven contestants on the show.