Nasty Nasty keeps fans excited by releasing another alluring teaser photo of Nine Muses' Kyungri and Sojin.

The photo was deemed in black and white colors and disclosed Kyungri and Sojin in revealing outfits, showcasing their sexy charm beauty. In addition, the red ' Nasty Nasty' text stood out in the photo which helped boost up the level of sexiness.

Nasty Nasty's debut digital single 'Knock' will be released on September 3rd.