Most bra companies use the +4 sizing. If you are family with the reddit sub, "a bra that fits" you will understand how this is a common issue. But with montelle, it is true to size. I've never experienced a place where if my under bust is 32 inches, the band I need is also 32 inches and it doesn't end up being too tight. Usually I'd have to get a size 34 in most brands to accommodate their weird sizing but not with montelle. I have now ordered another style too and I hope the sizing is consistent across the website. Although I now have a 34 banded bra that I don't know what to do with, at least I got it on sale and know that 32 is my go to going forward