The only way to ensure that your chosen implants are going to provide you your desired breast size augmentation is to complete breast sizing during your consultation. During this visit, you are provided the opportunity to try out amongst a variety of breast implant sizers in order to hone in on your desired breast size.  Also, when the implants are placed inside you, they will be actually 5% smaller in size. As a result, you must take this into account. A final reason why you may feel that your breasts are smaller at two months is that you have gotten used to your swollen breasts over the first six weeks that is now resolving.