I'm 105lbs, small frame. I'm a moderate B breast size and want to go to a D or possibly a DD. Is that a good size to go to?

Thank you for your question. Selecting the correct implant  is among the most important decisions in a successful breast augmentation procedure. There are several factors to consider and the placement of the identical implant will not produce the same results in all patients due to differences in:1. Dimensions of the breast  2. Diameter of the chest 3. Volume of the breast tissue  4. Height and weight 5. Breast shape, including ptosis and asymmetryI rely on 3 methods to advise my patients: 1. Dimensional planning  2. Gel implant sizing  3. 3-Dimensional Vectra imaging system.At the time of consultation, measurements are taken allowing for dimensional planning to select the implant which best fits the base diameter of the breast.  Gel implant sizing is performed to allow you to visualize augmentation with the various sized implants.  While some practices choose not to use imaging; Vectra 3-D imaging has been a very important method in my practice in selecting the correct implant size and shape as it allows you to see what you will look like following augmentation with any of the available implants. The best advice is to choose the surgeon that you feel most comfortable with who is also board certified. Best wishes, Andrew T. Lyos, MD, FACS

Cup sizes are not standard across bra makers, and implant sizing is NOT based on height, weight, BMI, or desired cup size.  This is something you will need to do IN PERSON with an experienced surgeon to determine what works well for you, and to get advice about if what you like is possible and what to expect with regards to results.  Be sure to discuss your goals and concerns with your board certified plastic surgeon and consider the pros and the cons. Be certain your surgeon is properly certified.  I've attached a link where you can start your search.