wannabeplumpsub:
Hi there!  I'm also MtoF TG and have been on hormones for quite a while now.  In my experience, the weight does not go where I would like it to.  Any added weight that I 've gained seemed to go mostly onto my midsection.  Some does eventually go to the boobs and a small layer distributes in the thighs and hips, but the fact that I haven't been able to get more in the hips, thighs, and butt has been a major disappointment to me.  Maybe I just haven't maintained a gain long enough to see better results.
There are women who have the same problem.  But basically, most humans will gain first in their midsection before filling out elsewhere.