I had my breast augmentation 2 months ago. I had 415cc in 1 breast & 450cc in the other one.

Dear fiora1992,it is hard to tell without an examination. Did you had breast asymmetry prior to surgery? Was that the reason for using different size implants? I would suggest you to consult your plastic surgeon. Only after a thorough examination you will get more information and recommendations.Daniel Barrett, MD, MHA, MS 
Certified, American Board of Plastic Surgery  
Member, Am. Society of Plastic Surgery

35cc will not make much of a noticeable difference. It is JUST over 2 tablespoons.    I recommend an in-office examination as well as a detailed discussion with a surgeon who you are comfortable with.   Finally, make sure your surgeon is a Double-Board Certified Plastic Surgeon certified by the American Board of Plastic Surgery (ABPS), a member of the American Society of Plastic Surgery (ASPS), a member of the American Society of Aesthetic Plastic Surgery (ASAPS), and a fellow of the American College of Surgeons (FACS).Best,Dr. DesaiBeverly Hills Institute for Aesthetic Plastic SurgeryHarvard Educated, Beverly Hills & Miami Beach TrainedDouble Board-Certified Beverly Hills Plastic Surgeon

Presumably you have saline implants if you are asking about adding volume? Did you have asymmetry before surgery (which would be the logical reason a surgeon would use different amounts in the implants)? Are you now thinking the breast with the smaller amount looks smaller? If the answer to the last question is yes, it may be reasonable to add fluid but you may want to wait until you are closer to 4-6 months postop to allow for swelling to subside and implants to settle, so that the surgeon is certain that asymmetry exists. If the implants look even now, then you would not necessarily need the fluid added. Stay in close touch with your surgeon as your results evolve.

In general I would say wait until you are closer to six months post surgery to even contemplate adding more saline to your breasts.  35 cc is not very much fluid to begin with but perhaps if you wait you will find you do not need it.  Best of luck to you

Your breasts may have been a little uneven to begin with. If they look even now than I would not add any fluid if it looks like they are uneven, then speak with your surgeon about adding more fluid. If you have any uncertainty, I would wait until at least three months after the first surgery before you make the decision

A 35 mL change in that size range will make a small but potentially noticeable difference.  Only you and your surgeon can judge whether this is needed and will be beneficial.  I would allow a minimum of six months to pass after your surgery before making a decision.  Remember that size is not the only issue but shape matters and asymmetry in your breasts present naturally may lead to less desirable changes in your breast contour if too much volume is placed on the side with less skin.  Good luck,
Jon A Perlman M.D., FACSDiplomate, American Board of Plastic SurgeryMember, American Society for Aesthetic Plastic Surgery (ASAPS)Beverly Hills, California