I have been enjoying the new virtual boutiques on Boutiques.com lately. You can take a fashion quiz and they analyze your results to find items you'll like. Click to see My boutique. Several celebrities have boutiques as well that you can enjoy browsing. My favorite feature of this site is the ability to let your mouse linger over an item and it will pop up several "visually similar" items for you to drool over.
For example, I lingered over this $485 Rag and Bone boot
...and the super smart search engine suggested this $79 Dolce Vita alternative: