Fashion used to have an important social and cultural function as it provided signals and markers for group alignment in society. As these kept changing periodically, this also gave a chance for realignment and reconsideration. (Compare this to the increasingly-caught-in-the-bubble phenomenon that we experience nowadays.)
E.g., just compare major fashion trends in the 1970s (from mini to maxi, to bell-bottoms, to pants and tube socks & disco attire, to clogs and para jackets, to college look vs. punk) to the major fashion trends of the last decade (slim fit). This variation from season to season, while, of course, invented as a vehicle for marketing, actually provided a vehicle for repositioning in a varying landscape of tribal subcultures that was typical, then.
E.g., just compare major fashion trends in the 1970s (from mini to maxi, to bell-bottoms, to pants and tube socks & disco attire, to clogs and para jackets, to college look vs. punk) to the major fashion trends of the last decade (slim fit). This variation from season to season, while, of course, invented as a vehicle for marketing, actually provided a vehicle for repositioning in a varying landscape of tribal subcultures that was typical, then.