Nobody loves a fat girl? Ry-Krisp. 

Calling All Girls. July 1947.

Ry-Krisp has roots dating back to 1899 as a Scandinavian crispbread. It eventually was purchased by Ralston Purina as a nutritional product, that was heavily pushed to the diet market. This ad, from the 1940s, which appeared in a teenage girl’s magazine pretty much illustrates the pressures to be slim and society’s attitudes toward overweight girls.