WJSN, also known as Cosmic Girls, is a South Korean girl group formed by Starship Entertainment and Yuehua Entertainment. The group's current lineup is composed of ten members: Seola, Bona, Exy, Soobin, Luda, Dawon, Eunseo, Yeoreum, Dayoung and Yeonjung.
The group debuted on February 25, 2016, with the extended play Would You Like? with the twelve-member line-up. A thirteenth member, Yeonjung, joined in July 2016. After being on hiatus since 2018, Yuehua's Xuanyi, Cheng Xiao and Meiqi departed from the group on March 3, 2023.