Fads, Marketing, and Industries.
Up to 1900 the full figured woman was the image of woman. It was not just Rubens, all of the painters showed full bodied as the ideal. Most cultures still do.
The change comes suddenly in America, and it had to do with the vote and equality. Mary Pickford, short hair, flat chested, wearing a shapeless dress. That was followed by Flappers, still in a skirt, but drinking, smoking, short hair, and just one of the boys.
In the 30's full bodied makes a comeback, May West, but she does speak her mind.
It is said that the WWI war babies came of age during WWII. In Europe sex was directed at starving war orphans, the gaunt and hungry look. The full body continued, as a pin up, out of your league, and the gaunt model, was what could be had for a chocolate bar. Twiggi played into this stereotype.
The prototype of Barbie was a German doll, for adults, a post war sex worker, with less chest. Barbie was made the all American girl, 38 14 26, with extra legs and tiny feet. She had everything, and no one asked where she got it.
Bratz dolls hint at where the money is.
Real women seem trapped in the middle, a 90% failure with 5% full figure and 5% thin and curvey being marketed. While this sells diets and plastic surgeons, it does so by making the rest feel inferior.
When I see the hair, makup, clothes, I wonder what they really look like. When I see a plainly dressed girl with glasses minding her own business, I am strongly attracted. They are so ordinary, just people, and no one notices them.
I say things like, "Hello", and introduce myself. After three or four times, she might tell me her name.
Acting like ordinary people slowly getting to know each other works. That ordinary day to day stuff is all that works in the long term. Someone who is glad to see me, someone I can talk to, and it works for them the same.
You are from Earth! So am I!