Our Definition (Simple) - Girls' Generation (commonly known as SNSD (which means So Nyeo Shi Dae for short) is 9 beautiful Korean singers.
They got mainly known all over the world when they released their first mini album "Gee", the video hit on YouTube and made 1000's of fans for them. Currently the video has over 40 million views.
Then they released their 2nd mini album "Oh!" which made a smash again on YouTube and as well in other Asian countries' charts.
They are most admired because of their dance and beauty, but also before "Gee" their song "into the new world" was truly beautiful sung by them :D
Watch "Gee" The smashing Hit by Girls' Generation!