Rainbow decide to teaser their fans little by little by releasing unit photos of the girls.

For the first unit, we have the pretty and glam girls Noeul, Hyunyoung and Jaekyung. The girls show their colorful hairstyles and sexy bodies. Anticipate more teaser images like this form the rest of the girls.

Meanwhile, Rainbow are making their comeback with "Prism" album on February 15.