There seem to be 3 distinct periods and types of "Robert Crumb Girl". We here at the Crumbpendium refer to them as old-old-school, old-school and new-school girls. Perhaps this will help you understand what we mean:
Speaking in generalities:
The old-old-school Crumb girl (Guntra, Mabel) is softer, plumper, prettier, with a fatter body.
The old-school Crumb girl (Asper Oggus, Honey Bunch) is cooler, sexier, hipper, with the classic Crumb-preferred body.
The new-school Crumb girl (Devil Girl, Bigfoot) is harsher, sterner, and less attractive (in our opinion); the classic Crumb bod but even tighter and more athletic.
Beauty is in the eye of the beholder.