Possible to Go from a D Cup to a B Cup on Petite Woman?

Although it’s impossible to guarantee a cup size
following breast reduction surgery, it’s highly probable that a B-cup is
attainable in your case.The majority of
patients who are undergoing breast reduction surgery want resolution of their
symptoms and improved breast aesthetics.Improvement
in breast aesthetics requires the creation of new breasts with good shape and
contour that have been lifted into proper position.It’s important that they have good harmony,
balance and proportion with the surrounding structures.For many women, this occurs when their
breasts are measured as B-cups.Unfortunately, cup size
means different things to different people and there’s virtually no correlation
between breast volume and breast weight.For this reason, it’s important to have good communication with your
surgeon.In the final analysis it’s
important that your breasts fit nicely on your body.

Thank you for the question and pictures.

Congratulations on your decision to proceed with breast reduction surgery. It is one of the most patient pleasing operations we performed. 

I think your stated goals are perfectly reasonable.

Before undergoing the breast reduction procedure it is very important to communicate your size goals with your surgeon.  In my practice, the use of photographs of “goal” pictures (and breasts that are too big or too small) is very helpful. I have found that the use of words such as “natural” or “C cup” or "fake looking" means different things to different people and therefore prove unhelpful.
Also, as you know, cup size varies depending on who makes the bra; therefore, discussing desired cup  size may also be inaccurate.

Best wishes.

More aggressive breast reductions carry the risk of compromising the nerve or blood supply to the nipples.