I Am a 32b/c Now....will 325 Cc High Profile Silicone Make Me 32d?

Thank you for the question.

I would suggest that you concentrate on achieving a certain “look”, not a specific cup size, with your breast augmentation surgery.

Unfortunately,  no plastic surgeon is able to accurately predict what cup size you will end up wearing after breast augmentation with a certain size implant. As you know, you may end up wearing different bra cup sizes depending on who makes the bra.
I would suggest that you communicate your goals with your plastic surgeon ( I prefer the use of goal pictures)  and ask him/her to do his/her best to achieve the results you're looking for.  You may want to leave it up to him/her to use a breast implant that he/she feels will do the job based on intraoperative evaluation.

I use  intraoperative sizers and place the patient in the upright position to evaluate breast size. Use of these sizers also allow me to select the breast implant profile (low, moderate, moderate plus, high-profile) that would most likely achieve the patient's goals. The patient's goal pictures are hanging on the wall, and allow for direct comparison.
 I have found that this system is very helpful in improving the chances of achieving the patient's goals as consistently as possible.

Again, in my opinion, it is best to set your goals and  level of satisfaction with the results of surgery,  on achieving a certain look/proportionality,  not a specific cup size.
I hope this helps.

It is difficult predict definitive cup size based upon the volume of an implant.  I suggest you do a baggy test to get a rough idea.

Work with your plastic surgeon to achieve the size you are looking for.  I suggest that you try out a bra and bring it to the office so he can estimate the volume it will take to fill that bra.  Each bra manufacturer uses different measurements so no two D cup bras are alike.