I've been on HRT a little over a year, and it seems (I hope) my feet have finally leveled out in size (I just bought a new pair of Docs, it'll be a pain in the arse if I have to replace these again) -- when I got new boots this weekend, I had the guy size my feet, and in my case, my feet haven't gotten longer, just wider -- from a UK5 to a UK5-W.
At my age (28) and lacking pre- and post-HRT x-rays of the growth plates in my long bones, it's hard to say how much, if any of the nearly two inches in height I've gained this last year is from HRT or simply a correction of spinal, but I seem to have evened off at a little under 5'2" from 4'11.75" last year.
I've noticed no real size increase in hands or head, but a bit of a brow ridge is becoming discernible.
The, umm.... "junk", though, grew a lot. It kind of jiggles a little in the shower.