overs. I have lots of tissue just no boobs from breastfeeding. they say you lose about 10% of the implant with unders and that 150cc is about a cup size so i reckon you’ll be a full c. I got recommended 300s too but i’m just gonna get slightly bigger, it’s only about half a cupsize if that. Everyone’s different hun so yours may come out smaller or bigger than mine. Call your pc and see if they can get the next size up in maybe, just in case. Then you can decide on the day. Maybe try the rice test too, which some of the girlies on here have talked about. I haven’t done it myself but you could see what 300s and 340s look like then. Hope this helps! X x