This mustard-hued number has been on my list for a good while now, and though I'm not supposed to be shopping (i'm currently on the Chanel diet -- i.e. saving up for a very special Xmas present to myself), I might just have to order one up for myself. In silk crepe de chine, understated tuxedo-style detailing and delicate buttoned cuffs strike just the right note. Also available in cream and black.
Madewell Clerkenwell Blouse, $110.