Girls' Generation (SNSD)

Debuting in 2007 under SM Entertainment, this 9-member group pioneered the second-generation K-pop era and became the best-selling K-pop girl group of their time. Their single Gee topped the Gaon Chart for nine consecutive weeks and sold over 1 million digital copies in South Korea, while Run Devil Run and I Got a Boy proved their artistic range. Girls Generation were the first K-pop act to perform at major Japanese arenas, selling out Tokyo Dome, and their combined album sales exceed 6 million copies.