I’m not so sure about this. Pale yes, as it meant you were upper class and didn’t work in the sun.
Skinny no, I think that’s a much more modern thing. They wanted you to be fat, or at least voluptuous as a woman. Again it meant you weren’t starved, you were healthy and well fed. You could bear children. That transcends a lot of cultures too. Pretty much all of them probably.
I don’t think we started romanticizing skinny until food was mass produced, shelf stable, affordable, accessible etc. and medicine could handle pregnancy and greatly prevent early childhood deaths.