I think beauty is comparing to nature. Foxes and cats are pretty. Thus girls tend to use cats and foxes related imagery as profile pics. They dont use banana slugs, hippos or pigs.

Thus.. if thats the case, women with features like a cat or fox is attractive. Triangular faces, small noses, large eyes, slender legs, narrow waist. If the bitch looks like a hippo or a pig.. its disgusting and off. So beauty standards is legit and doesnt change too much. Just different breeds of foxes or dogs. A decade would favor fennex fox look and then another decade would be red fox and then a another is artic fox.