I'm 69 and have been on MTF HRT for 40 months, and while the usual results from lowered T have manifested themselves, not much has happened on the boob front. I had slight moobs to begin with, and never even got breast buds until 12 months, and only very slight nipple and breast growth over the next year (all this was while on oral E and Spiro).
At 24 months I started injections, and am currently on 5 mg/week of EEn along with 12.5 mg Cypro and 0.5 mg Dutasteride every 3 days. E2 levels are at 431 pg/mL, T is at 19 ng/dL, and DHT at <5 ng/dL. Nipples have gotten larger, but areolas are still male-ish, while boobs have filled out more so I fit snugly into a 44D/46C bra. However...without a bra, I pretty much just look like I have medium size moobs.
I've tried Progesterone on and off, but hadn't seen much results with either boob growth or libido increase, so not taking it. I've also tried a few courses of taking E tablets orally (2 mg/day for 7 days) to increase Estrone and jump-start breast growth...but that hasn't worked well, either.
So...based on a few things I've read, I've started taking Domperidone (initially 10 mg 3 times daily, then increasing by one 10 mg pill each week up to 60 mg/day total). Don't really want to be lactating or nursing, but have heard it forces breast tissue maturation and growth.
I just started my second week, so now taking 20 mg/10 mg/10 mg each day, and...I am feeling fullness and pressure around the upper outside quadrant of each breast (my buds seem to form slightly above and to the outside of my nipple, and most of my breast tissue seems to be up in that quadrant) along with the odd twinge of pain that I associate with breast growth. I'm thinking this may be starting to have results.
Will post more at least weekly, and try and get some pics up here as soon as I can.