I do not have any set budget amount for clothes. I base my buying decisions on my overall financial situation. If money is tight, then I only buy things I absolutely must have. The better off I am financially, the looser my criteria is for making a purchase.
I like to shop often, since it increases my chance of finding great deals. Plus, shopping is a fun activity.
When deciding whether to buy something, I have certain criteria I use in helping me to make that decision. Does the item represent good value for my money. Then I consider how often I will wear it and under what situations I will wear it. How does It fit into my overall wardrobe, does it enhance it, is it an area of need.
Often when I go shopping, I am not looking for anything in particular, but then find a great deal, so I decide to buy it. One time shopping, I found a great pair of wedges on sale, and just could not pass them up. Another time I had no immediate need for a pair of flats, but since I had a cupon for them, and knowing I would need them in the future, I decided to make the purchase.
There will be times where in a month where I will buy a lot of stuff, and then I will go for four or five months and buy very little.
I find the more thoroughly I think thru my buying decisions using my above criteria, the less likely I am to overspend.