A lot of fashion trends can also come from advancements in materials or changes in their cost which allow new kinds of experimentation. As an example (not neces

A lot of fashion trends can also come from advancements in materials or changes in their cost which allow new kinds of experimentation. As an example (not necessarily positive) fast fashion was enabled by ruthlessly cutting costs of production. Polyester was really big in the ‘60s after its commercial release. And so on.