One of the traps in gender realignment is continuing to think as you were before -- you need to think as a woman. Bigger ain't necessarily better. If you have control over the size you need something that looks appropriate on your frame.
Scrolling down, I see you've asked similar questions about different parts of your anatomy which makes me regret answering at all. Are you simply a troll?
You should get extremely elongated ones so you can tie them in front if you find the need.
Whatever you feel comfortable with.
You do not want to go DDD. I have that and the attention they get it not usually positive. People seem to think women can either have big boob OR a brain, not both. It tends to attract neanderthals. Not to mention how hard it is to find clothes that fit. I wouldn't go any larger than a D. There is a also a lot of weight that goes into larger breast size, which often results in neck and shoulder pain and you end up needing a reduction later. Save yourself the pain and the hassle.
With all the questions you are asking, I have to wonder what your doctors are saying? From my understanding there is a lot of imput from the surgeons and there is a lot of counseling that goes along with gender reassignment. They should be discussing all this with you.
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