Hi @chan90 there’s a topic about bra fitting here that might help Bras . Also if you google different bra companies they’ll usually have a section where they advise you on which style would suit you best based on the shape and size of your breasts.
I might just add though that the measurements that the calculator gave me didn’t result in me finding a bra that fitted in that size, might work better for other people though. Yes, it’s total pain not being able to go into a bra fitters and get your size assessed by a professional and try stuff on but lots of places, even supermarkets will let you return bras that don’t fit. I think you can book a video fitting with some places.
I’m not sure about the Lovehoney returns policy on lingerie either though.