So the answer, for me, was: 12 days post surgery I was given the green light to wear sports bras only. I'm restricted from underwire bras until mid-December (6 weeks post-op).
Before surgery, I would typically wear 34 B with .... ummmm... a little room left to spare if you know what I mean. Post surgery I'm wearing 36C and fill the cups very nicely. I mention this because people at work are still questioning me about what I had done while I was out for a week on Medical.
So the change is not "IN YOUR FACE" unless you see me topless.