Hi Jay,
I found that my body hair (chest, abdomen, armpits) was significantly decreased after a few months on HRT. Although I did not have thick body hair, I would shave my arms, abdomen and chest routinely. I no longer do that at all, and I still have very little body hair. I had a couple of small patches of hair on my back below my shoulder blades that I couldn't reach, and they disappeared completely, thank goodness.
HRT does not have much effect on facial hair, unfortunately.
~Terri