Hello and welcome to Just Answer !
Recession can last for any period of time long or short a year or many years, no one can tell for sure. Here is a list of all the recessions we have had and how long they lasted.
http://en.wikipedia.org/wiki/List_of_recessions
As for your business, I would expect for your sells to go lower than usual, you might want to get in some lower price garments to add to what you have in stock. See what you can do to create some discounts for certain sales. I'm sure these would help.
Keep yourself up to date as much as possible, but try to understand that people may be cutting back on the high prices.
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