Back in the ‘40s, ‘50s and ‘60s, the advertisements for swimsuits were just as eye-popping as the designs themselves.

Men's swimwear was also going through a metamorphosis; swim suits started to feature more tank tops and even shorter shorts. Fast-forward ten years and the 1930s were embracing a lot more skin.

PHOTOS: 25 vintage ads for mens swimwear prove that skin has always been in style. ... Now, take a look at these vintage advertisements to see how guys used to have fun in the sun.