Greetings,
I began my journey as one of the men with gynecomastia. Many of the common triggers for breast growth have been listed here. While mine was being on a testosterone supplement, there are 90 or so drugs known to trigger breast development in men. Each persons internal chemistry reacts differently. I had gotten to a D cup before I learned about bras. I was not into binding and didn't want surgery to remove them so bras were what was left. They continued to grow and now I wear a 40G.
This entire process exploded the door off the room in my mind where I had all my "female" feelings hidden away. It started a two year process of dealing with it and ultimately choosing to draw a line and end testosterone and choose my female side. I had never ever considered cross dressing or anything gender related as it was "against the rules" and I had found early in life that if you follow the rules there was less pain.
I was on a couple of the bra wearing forums learning about bra wearing and began to notice I had similarities to some of the other guys with "odd" issues. When my Dad passed away last fall I determined to find out what my "problem" was and everything I learned said "transgender"!, would have rather had leprosy but here I am, and I'm loving it most of the time

Having looked at this bra wearing from both sides so to speak I have noticed some interesting things. People on Susan's seem to approach it like most women and just wear them because it is part of the plan. Not really very aware of all that there is to know about them, just like most gg women. A great deal of the men with gynecomastia have zero desire to wear a bra and approach it very technically. Kind of like, if they are going to wear them it's going to be technically correct. Lots of guidance on different designs, proper fitting etc with an emphasis on professional fittings. They are actually a good place to learn things.
I saw that different groups tended to wear different "looks" of bras. Guys who only wore them because of gyno tended towards plain bras, just the basics. Guys who had some "girly" component to them tended to buy a wide variety of colors, styles, accents, you name it. While I began in the first camp and told my wife that was where I was, I had a real internal pull to the other side. I read of others who took years to progress-plain to pretty. I was growing really fast and was buying new sizes quickly and decided to go to the pretty side rather quick. My wife had a hard time with it but I was enjoying every moment.
Part of my really becoming aware of my womanly needs was my responses to two kinds of bras. I was very self conscious of projection towards the end of my main growth spurt. I had read how some men found great comfort in minimizers so I bought a few. While I had to admit it was a whole different feel I quickly found that I actually missed my projection?? Haven't worn them since and have gravitated towards bras that accentuate them?

I am not the fastest in getting bras on and off under pressure so when I go to the doctor I wear a plain, wire free, front clasp to make things easier. At one of my last visits to the doctor I had a really deflating internal response to putting on this bra. If I really only wore due to gyro then this bra should be enough because it does what a bra should do. Why did I "need" something so pretty to wear? Finding the answer that I am a transwoman was very helpful indeed.
On a side note: I saw a post a while back that mentioned different ways to put on a bra. While I can reach around to unhook mine, I have never been good at hooking behind my back. I tried the "hook in front & spin" method but for some reason this didn't ever feel adjusted right then. I wondered about hooking the bra and putting it on over my head like a sports bra. It took a time or too to perfect, but I have found that to be my preferred way to do it. Of course I thought I was the only one who did it that way, haha. I read a report one time where women were studied about the way they chose to put on their bra and how it related to their personality. ?? what will they study next ?? Anyway thats when I found out that all kinds of women do it the way I described and it was amusing to read that my personality lined up right on with there description of women who preferred that method.

I have not really found any articles that describe the changes that large gyno breasts go through when on HRT but I am planning to write about it over the next couple years as the HRT takes effect. When I met with my endo and we went over the possibilities it kind of set me back a bit. I did have to come to terms that I could go up another two cup sizes from where I am now. Wasn't too long before it was "bring it on"

Hope someone finds a nugget somewhere in here