Every character who wears one exclaims that it’s an oh so bold and embarrassing design. To me they seem like ordinary superhero costumes. It’s not even like the armored underwear costumes that some characters wear. Anyone with more info on this?
Reference pics:



I think it’s the high waist cut for the yellow area. Plus the thong in the back. In fact, the yellow area looks a bit more like Borat’s swimsuit with a belt. The high waist was starting to be a trend irl in the US back in the early 90s for women but was still seen as risque back then because of how much hip was shown. You would never see that look on a man. Thongs were rarely seen in public for either.
Traditional superhero outfits had more of a “briefs” look which were just seen as more normalized. No high waist cut, and definitely no thong. Yes there’s blue spandex underneath of these so no actual skin is shown. That might be the only way they could have gotten away with it from a publishing standard. But that particular cut was just more suggestive than previous ones based on societal standards of the day.
This seems to be the best explanation