Hi Claire,
I booked in for my op on 24th Aug for 380 unders (although i’m still considering 410’s!!). I’m 5ft4, 8st10, size8, 34a & i have been told by Mr A i will be a 34D with 380’s. Each 150 is suppose to be a cup size so i would think 380’s would make you around a C/D. Some of the girls have said that they can get bigger once they ‘fluff’…
Good luck, hope this helps XXX