Fave store: Kaufmann's (local version of the May company). My friend and I were there over the weekend and she got a wool blazer, blouse and pair of pants, for under $50 combined!! I think it goes without saying that the place has kick-ass sales.
I LOVE vintage stores...even though most of the clothes are made for mini-humans (were people really that much tinier in the 1950's?).
But my favorite store and the one that I can't visit too often for fear of bankcrupcy, has to be Sephora!!