"Right now, it's Girls' Generation! Tomorrow, it's Girls' Generation! Forever, it's Girls' Generation!" Girls' Generation (Korean: 소녀시대; RR: Sonyeo Sidae), 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 group, Jessica departed from the group in September 2014.
Girls' Generation debuted on August 2nd, 2007 with their eponymous Korean album and the single "Into the New World". The group rose to fame in 2009 with the single "Gee", which claimed the top spot on KBS's Music Bank for a record-breaking nine consecutive weeks and was Melon's most popular song of the 2000s decade. Girls' Generation consolidated their popularity in South Korea with follow-up singles "Genie", "Oh!", and "Run Devil Run", which were released between mid-2009 and early 2010. Their second Korean studio album, Oh! (2010), won the Golden Disc Award for Album of the Year, making the group the only female act to win the grand prize so far.
The group ventured into the Japanese music scene in 2011 with their eponymous Japanese album, which became the first album by a non-Japanese girl group to be certified million by the RIAJ.
One of the prominent figures of the Korean Wave, the group has earned numerous accolades and the honorific titles "The Nation's Girl Group" and "The Nation's Singers" in their home country. In South Korea, they are credited as the lead female group that shifted the public's focus back to female idols after the Korean music industry experienced an influx of male idol groups from 2002 to 2007. Their success has influenced various K-pop girl groups of the future generations. Girls' Generation is also the first Korean celebrity to have official postage stamps distributed by the Korea Post. In 2017, Billboard honored Girls' Generation as the "Top K-pop Girl Group of the Past Decade, published in 2019.
In October 2017, SM Entertainment announced that members Tiffany, Sooyoung and Seohyun decided not to renew their contracts with the company to focus on their acting or solo music careers. With the change of music labels, the group was said to not be disbanded and future activities of the eight-member group remains to be discussed.