It's just psychological. It is foolish to catch up with fashion. People who feel fashionable will naturally have such psychology and behavior if they don't wear these.
They don't even know why they don't wear "pretend to be fashionable" or what is really fashionable. Fashion should not only look good, but also be meaningful, meaningful and suitable for yourself.
For example, when is purple popular, but you look like an opera singer when you wear purple. Purple is fashionable, but not for some people.
Fashion contains many factors.
The so-called "fashionistas" actually have no reason not to wear spring and autumn pants.