Just found this brand in our local Saks Fifth Avenue.
http://fabbylife.com/2012/01/05/scotch-rbelle-tunic-via-spiga-georgia-over-the-knee-boots/I bought this 2-piece tunic sweater from their kids department, and am very very happy with my purchase.
I am 5'4 and 107lb, at the boundary between regular and petite.
I bought size 14-16 this time, great fit: shoulders are not dropping, and waist part is not bulky.