Banana Republic Coat. XSP. I got this coat a few years ago and it's one of my favorite coats of all time. The coat is thick enough to keep me warm and it's nicely lined inside. I also like the length -- it's not too long or short.
BR has gone down hill for me ever since this...what happened BR?
I saw a replica at JCrew store and it is also available online.
JCrew Petite double-cloth Colletta coat. Comes in many color, the quality looks pretty decent & available in petite sizes.
BCBG Sweater Dress. XS. (similar here, here & here)