Girls' Generation is a South Korean nine-member girl group formed by SM Entertainment in 2007. Its members include (in order of official announcement) Yoona, Tiffany, Yuri, Hyoyeon, Sooyoung, Seohyun, Taeyeon, Jessica, and Sunny. They are commonly referred to as SNSD, the acronym of the group's Korean name So Nyeo Shi Dae or So Nyuh Shi Dae. The members were professionally trained primarily in singing and dancing while a select few were also trained in acting and modeling. Many of the members had already made appearances in magazine ads, television commercials, and small television appearances. For nearly two years, Korean websites speculated about which female SM Entertainment trainees would be placed into the group. They were speculated to be called Super Girls after their counterpart Super Junior.