Minzy was found by YG Entertainment. It was her video of her move and dancing that was uploaded onto the internet, and got popular and praises for her talent to dance. Because of her rising popularity in the internet, YG contacted and recruited her. She was placed into girl group 2NE1 along with three other members, CL, Sandara and Park Bom. 2NE1 debuted in 2009 with "Lollipop," is a collaboration with Big Bang, they label mates in YG Entertainment, when Minzy was 15 years old. The song become popular and reached number one on the Gaon Charts, but questions were raised about whether the group could survive on its own. In May the same year, the group had their official debut with the single "Fire," that reached number one again along with follow-up promotional single "I Don't Care." The mini-album 2NE1 went on to sell over 100,000 copies.