What I do now, is I find something I love, I get excited, try it on then PUT IT ON HOLD for 48 hours. Search the net for similar or same item, create outfits in my head.. or in polyvore. Check out some street style websites for inspiration. (yes, the shopping process is a very complex one..), then I swipe.
Case in point. The wonderful YSL "Lauren" booties. Love at first sight, but a very considered purchase.
Come April 2010, and as Melbourne winter sets in rather quickly, I cannot wear these with my layered outfits, skinny jeans, woollen opaques and minis and sass & bide "rats". Remind me to get a new pair. Mine have well and truly seen their use by date. But heck they've been worn at least once a week for 18 months!