I thought I'd share some of the 'rules of shopping' I have given myself to avoid splashing my cash in one spree. Obviously these will not all work for everyone, but at least it gets you thinking about what changes you can make.
1. Calm yourself down when it comes to SALES. I'm sure many of you, like me, lighten up and get this tingling sensation in the 'fashion' section of your brain when that word appears. But really, sales aren't your friend. Yes you can purchase that top you wanted for half price and those shoes are down by £4. Take a minute to think "Do I really need them?". I've spent numerous shopping trips pealing apart the sale rails and collecting as many bargains as I can. Make sure before you go to the till you check through what you've gathered in your arms and think about what you could style the pieces with and when/where you will wear them.
2. Spend your VOUCHERS wisely. At birthday's and Christmas it's common to collect a few vouchers for the same shop which could (hopefully) build up to quite a nice amount. I fortunately gathered quite a lot of Topshop vouchers this Christmas, and instead of splashing them all on the sale items, I decided to buy a couple of pieces I had had my eye on for a while (see number 3). That way you won't gather more pointless pretty tops to add to your collection, but some items that you really love and look forward to wearing.
I hope this helps and please let me know what rules help you save money!