I am a 30E ATM and obviously find it hard to find a good fit in bras, let alone bikinis.
So, whilst shopping yesterday I decided to see what this shop had on offer.
All Bs in different back sizes.
As they were tie ups, I thought I'd give it a go just to see what would happen.
32 - nipples were showing 
34 - better, but lots of boob overflowing
36 and 38 - better fits, but the cups were almost at the back and shoulder straps almost joined at the back.
Meanwhile, it kept the shop assistant going back and forth, probably thinking I was nuts (or deluded
).
At the end she made the remark that they should fit as the backs were adjustable.
To which I pointed out that it didn't really work like that and that it could have worked if they at least carried some Cs and Ds.
Now considering entering all shops in the hope that it reaches management/factory somehow.
And I liked the colours and shapes too 