I’m sure they’ll be fine, it’s only 30cc difference, measure out 30g of rice and you’ll see how little the size difference is. I am 10st and size 12-14 so a bit ‘curvier’ shall we say than most girls! Because of that, my 34b’s actually looked a lot smaller, I was terrified the 400 would look huge, they’re extra high profile as well, but they’ve balanced me out really well. They’re a DD now but don’t look it, I’m really happy with the size – they make my hips look smaller and make me look like I have a waist again which is great!