Hi Lauran, I started same as you – size, height, weight…. I had 460 unders and I am really pleased. I haven’t been measured but tried on my moms bra today (only 1 week post op so dont want to go and buy my own yet!) and it fit – her bra was a D made by ‘Janet Reger’.
I have seen a lot of girls on the forum saying that they have measured a DD/E/F after having implants which are smaller than the ones I had…. but then say that they look smaller than they measure. I’m not sure how that can be possible really but I do think some shops come up bigger than others – for example, most girls that have shopped in La Senza have said they measure an F but look a D…. it can only be one or the other at the end of the day, so I would say a 380 would be perfect for you! Or try a 410 if you’re not confident they will be big enough x