February 20th was a big day for the Wonder Girls and fans alike, because it was Sunmi’s final appearance as a member of the group!

The Popcon at Nassau Coliseum, in New York was the last for Sunmi as she will be returning to Korea by the end of this month to pursue her studies.

The Wonder Girls performed with stars such as Justin Bieber, Selena Gomez, Sean Kingston, and many more.

At the concert, the girls performed “Nobody,” and “One Night Only” as well as a dance tutorial. Check out footage from some fancams:

“Nobody” and “One Night Only”

And lastly, Ye-eun (aka Yenny) posted pictures of her and Sunmi on her twitter. Good luck to Sunmi and her studies! She will definitely be missed.