Will 375cc achieve a full D to DD cup? (Photo)

Thank you for the question.  Yes, depending on the patient, going from a B to D cup is a quite commonly sought after and accomplished goal with breast augmentation. Of course, I would not suggest that you base your communication of goals or your level of satisfaction with the outcome of breast augmentation surgery, based on achieving a specific cup size.
Generally speaking, the best online advice I can give to ladies who are considering  revisionary breast augmentation surgery (regarding breast implant size/profile selection) is:
1. Concentrate on choosing your plastic surgeon carefully.  Concentrate on appropriate training, certification, and the ability of the plastic surgeon to achieve the results you are looking for. Ask to see lots of examples of his/her work. Sometimes, it is necessary to seek several consultations before you feel comfort will about your choice.
2. Have a full discussion and communication regarding your desired goals  with your plastic surgeon. This communication will be critical in determining  breast implant size/type/profile will most likely help achieve your goals. 
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 "D or DD cup” or "unsexy"  etc means different things to different people and therefore prove unhelpful.
 Also, as you know, cup size varies depending on him who makes the bra; therefore, discussing desired cup  size may also be inaccurate. Again, best not to discuss your goals and/or judge the outcome of the procedure performed based on achieving a specific cup size.
3.  Once you feel you have communicated your goals clearly,  allow your plastic surgeon to use his/her years of experience/judgment to choose the breast implant size/profile that will best meet your goals.  Again, in my practice, this decision is usually made during surgery. I generally select appropriate breast implant size/profile after the use of temporary intraoperative sizers and viewing the patient's chest in the upright and supine positions.
I hope this (and the attached link) helps.

Hello to you from the US and thanks for your question. It is difficult to make an accurate assessment from a single photo and without an examination.  That being said, from the front view photo that you posted I believe that it would be difficult to achieve your desired "look" with 375 cc implants. In  your wish photo the implants dominate the chest wall and provide a very full look. Your BCPS must have measured your breast parameters and soft tissue dynamics and determined an ideal size for a natural look. His/ her implant choice is the safest  choice for your chest wall size and will provide the longest lasting result.  The look you seek appears to be the "operated on" or "done" look and can be achieved with larger sized implants. This choice however may cause significant soft tissue stretch over the years resulting in a low-lying breast posture (sagging). Hope this helps. Best wishes.