Another thing that was great about her was how different she could look, whether from month to year, sometimes in the same photo session. Most models they'd throw a different wig on her (I think trying to keep people from tiring of the same model), but their appearance didn't really change much.
I think maybe it had to do with her longevity. A lot of models burned brightly (and briefly), some only modeling for a year or two (or even a long weekend... I think that's where the wigs really came into play).