PS and it only goes ‘out of fashion’ for so long. You see the fashion industry working in cycles, it’s simpler and cheaper to market and copy styles from previous eras/decades, which of course sells off the back of ‘retro-cool’ (fashion words innit)
It’s all poncense of course, but we all feel socially insecure to some degree or another (discounting the profoundly autistic or self-confident)
And the fashion industry also creates/exploits a perceived ‘status’ for the wearer. Most everyone wants to impress a potential mate/in-group/not be ridiculed/appear wealthier/as wealthy others. So as a business it works. And it works very well as long as we have cheap labour to keep us in affordable (and unaffordable – see finance industry) fake tan and togs. Even rebellion against fashion has become cleverly/cynically exploited as a fashion market in and of itself.