WJSN (Korean: 우주소녀; Chinese: 宇宙少女), also known as Cosmic Girls, is a ten-member South Korean girl group, formed under Starship Entertainment and Yuehua Entertainment. The group consists of: Seola (설아), Bona (보나), Exy (엑시), Soobin (수빈), Luda (루다), Dawon (다원), Eunseo (은서), Yeoreum (여름), Dayoung (다영), and Yeonjung (연정).
They were originally a 13-member Korean-Chinese girl group (debuted with 12-members) .
