I would like to find a store that will measure clients, accurately.
I've always worn a 34 DD but still bulge out here and there. Even with a mastectomy bra, they don't measure but fit all the bras they have and you get the one that fits closest. That still doesn't fit quite right, but close. Since I'm over 65= SS pays for more than one of these over priced bras, about $60 or so each about 3 years ago when I checked, (I don't go to doctors much) so I take it of course.
We did have an excellent store here that advertised such a thing, then it closed right after that. So I stuff my right side and my bosom buddy into the other usual "almost fits" bras and try to forget it.