2NE1 is a South Korean hiphop/pop girl group formed by YG Entertainment in 2009. 2NE1 consists of four members: Bom, Dara, CL and Minzy. The group's name 2NE1 stands for "New Evolution of the 21st Century".
They first appeared in "Lollipop" in commercial campaign with Big Bang for LG Electronics, and their debut single "Fire" was released on May 6, 2009. Since then, the group has released two extended plays, 2NE1 and 2NE1 Second Mini Album, and one studio album, To Anyone.
Fans of 2NE1 call themselves "Blackjacks", a reference to the card game Blackjack.