Girls' Generation  is a nine-member South Korean  girl group  formed by S.M. Entertainment  in 2007. The nine members are:  Taeyeon  (Leader),  Jessica ,  Sunny ,  Tiffany ,  Hyoyeon ,  Yuri ,  Sooyoung ,  Yoona  and Seohyun . They are often referred to as  SoShi , or  SNSD , the first of