Well, I don't know at what age you're starting, but I assume over 25+ if you are already working. Be careful because, unfortunately, as trans women we often have smaller cups than our moms and sisters, especially if started late. If you're over 40 or 50, you would be lucky to get a small A cup, due to years of testosterone exposure. I know a trans girl who started at 17, and never got beyond an A cup, while her mom was a DD. I also know another who also started 17, and ended up with a 40D, while her mom was a 36B, so it really varies, but she had gynocomastia before hormones. It really depends. Bindage can also hinder your breast growth, so be careful.