2NE1 (투애니원) is a four-member girl group under YG Entertainment. They debuted on May 6, 2009 with the single "Fire". Their name stands for "New Evolution of The 21st Century" and is pronounced as "To anyone" or "Twenty-one". Prior to their debut, the group appeared alongside labelmates BIGBANG for the commercial song "Lollipop" in 2009. On November 25, 2016, YG Entertainment announced the group's disbandment. Their final single, "Goodbye", was released on January 21, 2017. On July 22, 2024, it was announced that the group had officially re-signed with YG Entertainment.