Quote Originally Posted by Catrin View Post
According to your calculator, I need a 30DDD/F which I've never heard of... So I plugged my numbers (31 ribcage, 36 cup) and got the same thing in other online calculators. So apparently I've an odd size as well....but using the usual calculation where you add to the band number, I would be a 36A which is just plain wrong.

To go further down this rabbit hole, I found THIS link that provides a chart of bra "sister sizes". According to this chart, 30F also = 36D (and a bunch of other sizes). So next time I go looking I've a few other options to check out. I've never heard of most of the bra sizes on this chart, interesting!
You are close to my size, as I am 30 on the rib cage and 35 around the bust. I find a 30 band works best in most bras. www.herroom.com has a lot of these smaller sizes with large cups. I bought a very large pile of bras from them, tried them out and sent back what I didn't favor.