When I first saw the PlayAlong Cheetah Girls dolls, they were just new dolls. I recognized Raven-Symoné, but none of the other Cheetah Girls were familiar to me. I was not familiar with the teen book series or the Disney movies based on the group. (Like the situation of the High School Musical dolls ... I just saw dolls.) For those interested in the background(s) of the characters, there is a Wikipedia article elaborating on the novel series and offering links to related sites.
I like the dolls, but I'm not fond of their clothes. Below, the Cheetah Girls dolls: