It seems that standards for female beauty changed after World War I; before that, idealized women were portrayed as voluputous, or even a bit pudgy. In the 1920s, the "boyish look" was all the rage, when women wore flat bras to hide their breasts. Through the 30s, 40s, and 50s, voluptuous hourglass curves were still appreciated, but then (1965) came Twiggy! Since then, women with any curvature have been told they are TOO FAT, and too many of them believe it.
While the image of "health" probably generates each era's idea of "beauty", we should remember that moderation in all things usually works out best. Women have natural fat deposits in their buttocks, breasts, and legs for good reasons.
Personally, I find a soft, curvaceous woman far more attractive than the skeletons-in-skin the world considers "healthy". My wife is considered "overweight", and I love every ounce!