n2yffalk4otsh4ymopxorpvk98nt58ii This past December, SISTAR sub-unit SISTAR19 announced plans of a comeback in the new year. In preparation f0r the first single's release on January 31st (thats next week!), the ladies released some true-to-form sexy teaser pics. Hyorin and Bora, adorned in sweaters and socks, pose on a bed with inviting expressions on their faces. All signs to this being a huge single for the ladies who originated the sub-unit concept. Are you excited for new music from SISTAR19?