no, i do not have any reference.
But it is based on abnormal curvature in specific anatomical regions. And these abnormal curvatures are not natural, and in this case are seen only in the ares where lot of models/actresses do body surgery in a hope to look more beautiful. And so many abnormal curve in so many specific regions can't be coincidence.
So, yes, my comment is based on assumption, but it is an educated assumption, not any wild guess.
