2NE1 (Hangul: 투애니원; RR: tu-aeniwon; pronounced "to anyone"[1] or "twenty-one"[2]) is a South Korean hip-hop/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".[3]

They first appeared in "Lollipop", a commercial campaign with Big Bang for LG Telecom, and their debut single "Fire" was released on May 6, 2009. Since then, the group has released two extended plays, 2NE1 and 2NE1 2nd Mini Album, and one studio album, To Anyone.

Fans of 2NE1 call themselves "Blackjacks", a reference to the card game Blackjack.

Pre-debut 2NE1

The group was first mentioned by the press in late 2008, YG Entertainment announced that the group would consist of four members and debut sometime in May 2009.[4] The company stated that the group had trained for 4 years, and that their debut album would contain songs produced by 1TYM Leader Teddy Park.[4][5][6] The group's name was initially announced as "21"; however, due to the discovery of a singer with the same name, the group was quickly renamed "2NE1".