Feelings when developing breasts with hormones

I started taking Estradiol 4 years ago with the goal of developing real girl like breasts. I am now a small A cup - i cycled on and off so probably didn't get the max growth. My question to both other people taking MTF hormones, and especially born girls - I love the sensations when I have breast buds, and feel proud of my little breasts. How do you feel? How do teen age girls feel about developing their breasts?