Hi LSMITH.
I have also answered your question about tuberous breasts, which I don't believe you have. Your breasts are a little asymmetrical, with the right one been sightly larger than the left. If the same implant is used on both sides, then you would expect there to be persistent asymmetry post surgery. Sizing of implants is a difficult one to decipher without knowing what your surgical goals are and what anatomic limitations exist. For every patient having breast augmentation, there is a range of implants that will fit their anatomy. I will often get the patients to "try on" different volumes by placing trial implants under a bra to see what size they are happy with. Remember, that larger implants are not always better. You have to consider your body type and what will match your torso. If pre-existing size differences between two breasts are appreciable, different sized implants can be considered.
I hope this information helps.
Dr Ray Goh

Hi there,
Yes. You do have a slight degree of breast asymmetry which is within normal limit. Both your nipple positions otherwise appear quite favourable and I think a larger implant on your left side (the smaller side) may potentially improve the minor asymmetry as described.
Choice of implants are always to  be guided by your consultation with your surgeon and your personal desires & preference for the ideal surgical outcome. There are a number of factors for consideration and it's difficult to advise without an in person consultation with proper clinical assessment. 
In addition to varying approaches in deciding the most appropriate implants with my patients during consultation, I always use an intra-operative gel sizer implant during the surgery in determining the most suitable choice of implants on the operating table. This will also help in working out whether using a different sized implants between the two sides is a worthwhile approach in achieving optimal shape, size and symmetry.
Good luck with your upcoming surgery. 
Best wishes
Ellis Choy