"I didn't get a boob jobbb. I just gained weightttttt Duh," Sunmi said in an Instagram post. She also uploaded a screenshot that showed a list of related search keywords on Naver, South Korea's largest web search portal. A suggested keyword was "Sunmi breast surgery."
Sunmi debuted in 2007 as a member of Wonder Girls, a four-member girl band that was defunct in 2017. She left JYP Entertainment to become a solo artist.