Hint tell them size by fruit.
Example: Her "breast" are as big as (apples, oranges, grapefruits, or watermelons).
The woman will be able to help after that.
That is a easy fix as well just show them where your arms touch the other when you hug her. It gives a rough estimate of the band size. With that and the cup size they can find a bra that should fit. My Mother owned a ladies garments store. I worked there as well this is a classic trick.
And if it doesn't match there is always the return policy lol
Example: Her "breast" are as big as (apples, oranges, grapefruits, or watermelons).
The woman will be able to help after that.
And if it doesn't match there is always the return policy lol