A guess after the excesses of the hipsters 'normcore' is the inevitable reaction. Having found this word on the Railway Telegraph thread it is now in the mainstream/normcore media:
http://www.telegraph.co.uk/culture/books...unced.html

Of course there is something quite sensible about the idea that what is in 'fashion' is actually the type of clothing worn by most people most of the time. It is actually quite ironic that 'fashion' is so often the things that people don't wear in their everyday life.

I probably need to accept that I am the archetypical 'normcore' and that everybody now wants to look like me. But I also like people wearing different things and I worry that if everybody wears my 'uniform', then I'll have to be the first to rebel.