SISTAR's sub-unit duo Hyorin and Bora are sexy and they know it.
The pair, aka Sistar19, are currently readying to release their long-awaited comeback single at the end of the month and today released a first look at their sexy concept.
Lazing on beds in chunky knitwear and underwear, Hyorin and Bora, both 22, show their shapely legs and famous curves.
In other shots, Hyorin sits up on the bed sensuously running her fingers through her hair and gazing in to the camera, while a jewelry-clad Bora lies on the floor with her lips close to a phone.
While the sub-unit's debut track "Ma Boy" was a younger sound for the group, a spokesman for Sistar19 says fans can expect something a little different this time around.
"The new material has been created under the theme of innocence and sensuousness," says the rep. "Sistar19 put a lot of efforts into the new material in order to satisfy their fans. I can assure you that the musical quality of the material won't disappoint you."
The pair have already recorded their new material, collaborating with SISTAR favourite Brave Brothers (the brains behind "Push Push", "So Cool" and "Ma Boy").
Their yet-to-named single and music video will be released on January 31.