Why have women (at least in my area) gone from full coverage to cheeky bikini bottoms in such a seemingly short period of time?

For the record, obviously women are allowed to do what they want and my opinion doesn't matter.

But the change from full coverage to cheeky bikini bottoms (at least in my area) was just very sudden. It felt like almost an overnight change.

One day full coverage bikini bottoms were the norm and cheeky ones were seen as crass and vulgar.

Then the next day cheeky bikini bottoms are the norm and full coverage ones are only worn by either religious women or older women.

And I noticed this in not only random women, but my female friends and acquaintances as well. All of them went from full coverage to cheeky just like that. And so did my girlfriend as well.

Asking any other woman about it would most likely be too touchy, but I luckily had my girlfriend to ask!

She gave me an answer that went something like: "For me personally I just sort of came to realize that the human body isn't something to be ashamed of, and that there's nothing wrong with showing a little more skin. Beyond that cheeky bikini bottoms just look way better and are way more comfortable. Not sure if I can go back to full coverage ever again, haha."

Obviously not exactly in those words as there's no one I'd remember all that, but those are the same general ideas she shared.

That's my girlfriend's answer, and it's 100% valid, but I was wondering more on a wider societal level rather than just an individual woman's answer.

TL;DR For me it doesn't matter either way, but I'm just asking/wondering because it seems like a change that happened overnight (at least in my area).

Why have women (at least in my area) gone from full coverage to cheeky bikini bottoms in such a seemingly short period of time?
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