My how times have changed. This is an image of a Bradley Swimwear Style book from 1924.
The image of the gal on the right reminds me of the Jantzen diving girl and I'm wondering if they were intentionally trying to capture that essence. Jantzen's diving girl originally appeared in 1920. In 1922 Jantzen provided stickers for store windows that customers placed on automobile windows. A craze swept the nation and millions of the stickers were given away.