This is such a fascinating discussion! I was totally prepared to announce myself as a left-brain shopper. After all, I'm left brain in almost everything, including my sewing. (I even have a theory about two classes of those who sew: the Artists and the Engineers. Guess which I am?)
But... reading the discussion, particularly Donna's and Jenn's, it was immediately clear that my wardrobe aesthetic and goals are strongly right-brained. Instead of analytical, I'm very intuitive about shopping. I "feel" holes I need to fill, but I'm also very open to things that I just see. Budget and common sense shape that intuition, but don't define it. I'm okay with loving something and leaving it, if I can't see a way to work it into regular wear.
And it really seems to work. Much of my wardrobe might be "frosting" in one sense, but I DO wear it
regularly. My dresses are day dresses, not cocktail dresses or sun
dresses. (Cake vs. frosting discussion: http://sewaholic.net/too-much-.....ough-cake/).
But (with a few notable exceptions) the things I buy (or make) based solely on left-brained analysis don't tend to get regular wear. Partly because my intuition has kept me from getting too many separates to start with. Dresses are another story.
Last night I counted my solid blue dresses. I have 12. TWELVE. That includes knit, woven, pastel, denim, chambray, royal blue, periwinkle, and navy. (It doesn't count anything with a pattern, even if two-tone.) Some of them I might pass on, but I love blue, I love dresses, and they're (mostly) very individual. My left brain can't justify 12 blue dresses; but my right brain rejoices in them, and I wear them all the time.
(I still probably should pass on the less-loved before indulging in any more!)