It’s so bad that my fiancée has some bras that say she’s a B cup and others that says she’s a D cup. In order to go bra shopping, you have to actually try them on to find out if they fit.
If I had to try on underwear to see if they fit, I might not bother with underwear at all!
- Clothing sizing in general is just arcane at this point. 
- Have her go and get fitted. Many women don’t know what their band/cup size really is. - Also, IMO, women’s pant sizes are where the real absurdity in sizes is. - Not much help to know what cup size you are if the bra companies are only pretending to be standardized 
 
- I cut a check when the boob owner says it’s boob maintenance time. Why do I need to know anything about sizing? - Knowledge is power and it allows you to give a wider range of gifts if you know more 
 



