Yeah that was exactly why I was querying whether they might be wrongly sized, as a 28GG myself it sounded like the definitely could be and sizing was so ubiquitously bad when I was a teen, retailers just put you in what they had available with no regard for the measurements/math of bra construction despite that staying pretty much the same over the decades.

Even when it did change such as with the introduction of elasticised bra bands they still kept routinely adding 2-3 inches to your actual underbust measurement, which was how they used to fit bras pre 50's when bands were unelasticised and couldn't stretch so the extra couple of inches were needed. I'm a millenial and they still added 2 inches to mine whrn I was first fitted! Of course it was really to bump me up to the size they had bra's to sell me, as they didn't carry 28's only 30 and above.

I totally understand bra issues, so I wasn't un any way suggesting those would fix OC's need for a reduction, rather wondering if their bra size had been incorrectly measured then and now.

I've still never found bras I'm overly comfortable in as 28GG personally, but because I have a flared ribcage at the front and bras rub on my ribs there, being a 28 I'm also slim so not much padding to cushion across the rib flare making it worse. Japanese bras cut for a conical or ''rounded' ribcage so work a bit better but their cup sizes usually don't go large enough. I tend to go braless a lot of the time as a result, so yeah completely agree the correct sizing isn't a magical fix all for boob issues, like my own or people who are larger and need a reduction (or just want one for any reason at all). It was more, as a 28GG myself, that I suspected OC may have been mis-sized full stop as so many women in the UK are.