Effects Coffee Drinking Has on Breast Tissue / Augmentation?

I don't think drinking modest amounts of coffee has any effect on breast tissue. I don't see any reason to discontinue it in your present situation.

Coffee should have no effect on your ability  to undergo breast augmentation. Good luck with your choice of surgeons.

There is rather soft evidence of an association of caffiene use and discomfort from fibrocytic disease in patients with that problem. 

I probably wouldn't bother stopping the coffee. As a trial if you were too refrain during the menses and your breasts were less tender than usual, you might have a slightly easier time with post op breast pain, but the tradeoff may be caffeine withdrawal headaches. 

All the best. 

There may be an association with fibrocystic disease and caffeine but this should not effect breast augmentation surgery as long as  you are a good candidate for the procedure

From the literature that I have read, the jury is still out as to whether caffeine or other similar agents, such as the methylxanthine, theobromine (literally "bromide [food] of the gods" - what an appropriate name for the stuff in chocolate!) have any effect on breast tissue.  As you are probably aware, there has been some evidence that benign breast changes, including fibrocystic change, are associated with caffeine intake, but there are just as many studies calling this association into question.  I think it is probably like all things:  there may be some people for whom this association exists, and others for whom it doesn't.  In addition, these types of things are very often dose dependent, thus, more moderate intake of xanthines like caffeine or theobromine can be well tolerated, whereas greater amounts may lead to the symptoms that we are discussing.  If you have discovered an association between your own breasts and your intake of caffeine containing foods or drinks like coffee, tea, sodas, and the like, then you may wish to take this into consideration and alter your dietary practices if you get breast augmentation.  In any event, I don't see drinking one cup of Joe per day, as you are doing, as a big problem.  At the worst, you may experience some increased firmness and soreness in some areas of your breasts if you do have any of these issues, and you can adjust your caffeine intake accordingly.  It certainly won't cause lasting disease, or cancer, because those studies are actually pretty conclusive.  So, I would tell you that if you are committed to undergoing breast augmentation go for it, and don't be afraid to show them off while ordering that vente Americano or latte at Starbuck's!