Headnorth, fashion is anthropology.
I’ve studied it for 25 years. Here’s something interesting and totally unrelated to this thread
Men grow facial hair when they feel threatened by women.
Late Victorian/Edwardian era, women were sort of allowed to go into further education, the married women’s propert act. Rise of suffragism. Long beards and sideburns.
1960s/70’s. Womens Lib, equal pay act,
And now.
Also mini skirts sweet signalling sexual availability as the pill was invented just before.