I'm struggling with the sizing and am stuck between 450cc and 485cc and my surgeon has suggested Allergan Natrelle Inspira TSFs.

I am 5ft10" weight is 142lbs, rib cage under breast measurs 31.5". Current size is 36c but want to go to about 34/36 e/f. I want to wear dresses without a bra with a low scopping neckline & a cleavage without the push up bra occassionally. I started at a 520cc, came down to 485cc as more comfortable for exercise, but now feeling that 450cc is more manageable size, although it depends whether the implant fills up top tissue or sits over the breast as people tell me differently!! very confused.