I had a discussion about this a female friend recently as to whether she'd considered female perceptions of beauty had become way out of whack since the Internet.
I think the main damage may actually come from female perception of male sexiness, (and conversely), e.g., a girl being disappointed in her boyfriend because he isn't Brad Pitt.
Edit: fixed.
Female perceptions of beauty were way out of whack before the internet. The internet may be making things worse, but I think there's a natural drift towards more extreme standards. If the ideal is to be strikingly thin, then the demand will be to be ever thinner.
Male standards have gotten more extreme as a body builder aesthetic has partially taken hold.
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