I'm also short and curvy. I am between the 10-12, though. Even at my thinnest (which I think was in the 1-teens, and back when I was a teenager), I never dropped much below a size 6-8 in the US, because of my hips and chest. Oh well! I really don't mind the hourglass, I just mind how hard it is to lose weight now, as opposed to say, 5 years ago.
That said, I'm probably far healthier now doing the diet/exercise thing, than I ever was earlier on, where I think I dropped it doing whatever fad diets were popular at that point.