@emmaelizabeth You can always go with what your surgeon suggests on the day? I was offered and ordered 4 sizes and decided on either 375 or 400 natrelle trx and then on the day russo said he would put in what was best for me and did 400’s. I love them already :). Was a small size 8, 32A cup and wanted to look a full natural D. At the mo they r bigger but look so natural already (minus the swelling and pointy nipples lol). X