What are the factors influencing of fashion?

There are quite a few influences in fashion. Global events could influence fashion. If there is a global craze for something, fashion desgners might feed off of that. Also, there local area materials can have some influence in fashion. The seasons greatly influence fashoin, as you can't wear summer clothes in winter, unless you live near the equator, but designers like to keep with the seasons as well. And demand from stores for a certain type of clothing will change the style of fashion.