To just not go back

[Faceicle]

I am in SE asia at the moment, and ran through a shopping mall to buy something else when ... holy grail appeared. An actual lingerie shop. I popped my head in, explained I had the kids in the car so couldn't stop but could I check if she had unusually big sizes for Asia? I wear a G. Lady in the shop said yes but she'd have to measure me. Fine I said and I'll return for you to do that but please show me in the meantime what you're stocking in big cup sizes. She stated I will need to measure you and did so, really weirdly, about 2 inches higher than my bust. You're a 38 she said, here are the 38 gs. This makes no sense to me, at all. Should I just leave it now if she's measuring so weirdly? If I don't go back then I will never see big sizes in my region again - eurgh.

Maybe try on the bras in store and don't buy them if they are bad on you

It would be worth it if you got even one bra esp if so hard to get

Why don't you try some on? If they're the wrong fit just explain then.

I've had someone just guess my size by looking and then handing me a couple of designs to see what I like best.

I too had someone guess my size by looking. Then trying a few on to see what style best fitted and supported my big boobs.
I'd go back and see if any fit. It's not like you are going to be forced to buy the ones that don't fit or not allowed to buy a different size.

In SE Asia the customer is always right at high end stores - just insist on trying on different bras and eventually the assistant will cave. Suggest you try the sizes on. My guess is 38 is the smallest band size they offer for your cup size - but suggest you have a look and find out.