In some parts of the world fat girls are preferred to thin ones. And in Europe too, in some epochs of history, thinness was not particularly appreciated. Take a look at paintings of famous painters, where women of well-defined bodies abound.
I am not talking about the pathological obesity caused by junk food and hormonal disbalances, which is another matter.
Maybe
the modern obsession with female skeletons is a sign of true deviancy.