SISTAR19 releases teaser photos for their comeback

SISTAR19 has revealed teaser photos for their comeback.

Starship Entertainment unveiled photos of Hyorin and Bora, showing off their S-line on a bed.

Their label said: "Fans have been waiting for a long time for SISTAR19's unit project. The girls put their best into this to give back to their fans' support. They will show you their best, not only in music but in all areas".

The duo are set to release their new album on January 31st.

Check out the other teaser photos, after the jump.