Sulli revealed her selca taken from their Music Bank waiting room. On July 27, she wrote on her me2day account,

"Everyone~~  Go Go-ssing in front of the TV now! KBS Music Bank! Live broadcast! Please cheer for f(x)'s "First Wisdom Tooth" performance~^^♥"~

On her latest selca, she is wearing her sexy Music Bank's comeback stage outfit revealing her slender and slimmer body. Though she looked a little tired, she still appeared lovely in this photo, doesn't she?