There are a number of fashion centers around the world – Milan, London, New York & Paris. Toronto in Canada and Miami seem to be up & coming too from posts I read. Most of them have fashion weeks a couple of times a year – one for Autumn/Winter and the other for Spring/Summer – usually kicking off with New York.
Now if you’re selling fashion from a shop, this is something worth paying attention too, because catching people’s attention requires doing something out of the ordinary, and if you’ve ever watch fashion displays, there are usually clothes that are way out of the ordinary being paraded up & down the catwalks.
Use things you see that people are talking about and jump on the bandwagon where you can. You’ll find that there are a heap of special weeks and months that are promoted or celebrated through the year that you can also use – like International Hot Tea Month.