I don't know when puberty started.
In a way, I was lucky until late 20s because I was so ignorant about medical transition. About body characteristics, I learned late about that too. I saw girls grow longer hair. My parents were taking care my hair remained cut so I just accepted it. I thought I will always have hair and that I will be able to grow it myself someday.
I didn't notice breast on girls, so no big deal either. I didn't stick with boys who would make sexual remarks so that was clear too.
I also didn't know about the genitalia difference literally until the biology class when I was 14. After that class I did check (again and repeatedly) what is in my pants and here is my thought --
I can make it disappear if I wish for it, right? I will use magic. Something has got to work. But I knew that was not truth. I was not about to ask girls whether they really have a vagina. I knew better by then. Back then I didn't know anything about transition so I just accepted the state of things too. I was a kid. Adaptable. Flexible.
Those parts were not as damaging. The most damage I suffered is from inability to socialize with girls and take social role of a girl. Heey, colorful stuff. Sweaters. Barbie backpack. Dolls. Had none of it. I watched my childhood slide and roll away. Lost. I will never accept it. Even nowadays I think somehow it will come back and I will have those days again. I know it is a trick of my mind, but can't help it. Thus, selected: mentally damaging. Those people who knew me since primary school and had elected to add me on facebook after I came out do notice one big difference. Will quote one female friend
I never saw you smile like that before. (as on your pictures)
Enough said.