Girls' Generation.

Girls' Generation, also known as SNSD, is a South Korean girl group formed by SM Entertainment. The group is composed of eight members: Taeyeon, Sunny, Tiffany, Hyoyeon, Yuri, Sooyoung, Yoona, and Seohyun. Originally a nine-piece ensemble, member Jessica departed from the group in September 2014. Among the most influential girl groups in K-pop and a leading figure of the Korean Wave, Girls' Generation has earned numerous accolades and the honorific nickname "The Nation's Girl Group" in their home country.