Isn't shrinking from HRT (of any part of the body) due mostly to loss of muscle mass? If so, than would it be accurate to think that muscular people would shrink the most after starting HRT?
I would love to shrink a little, too (I'm a science major and used to joke with my friend about inventing a shrink-ray), but I wasn't muscular even before starting HRT and don't expect really get any shorter.
Now, I would LOVE to see my upper body (shoulders etc) get a little more compact, but for the same reason as above I don't expect it.