Girl group SISTAR's member Soyu revealed her body line through a tanktop.

On the 14th, Soyu posted on SISTAR's Twitter, "Ah! It's tomorrow. SISTAR's concert is tomorrow. Concert start. See you tomorrow" along with a picture.

In the picture, Soyu is on the floor, holding a mic at the camera. She is wearing a pair of black skinny jeans with a navy blue tank top that reveals the curves of her body.

Internet users who saw this commented, "SISTAR, so 'hot'", "I wonder how much sexier they'll be at the concert", "Soyu got prettier too", etc.

SISTAR will be holding their first exclusive concert "Femme Fatale" today in Seoul.

Photo Credit: SISTAR Twitter