SISTAR�have released the next set of teasers for their upcoming�4th mini album!

SEE ALSO: Koreans are siding with Min Hee Jin over HYBE & Bang Si Hyuk following her emotional press conference

These 'eye contact riddle teaser' images focus on the SISTAR members' eyes, sticking with the same, mysterious, feminine concept that they've shown in their teasers so far. We still don't know much about their comeback except that it's coming soon by the end of this month.

Stay tuned for updates!