My body type typically doesn't work well with most OSFA-type items. If it's something like leggings, stockings, or panties, those are usually fine, but anything in the boob department will almost aways be too small. I wear about a US size 6-8 in pants, but I have DD-sized boobs, so ONFA, and sometimes even "queen-size" often ends up being too small in the bust. I have similar problems when buying dresses. Things that fit well through the waist and hips are almost always too tight in the chest.

I love my boobs, but they make buying certain types of clothes a bit of a challenge sometimes. Most women's clothing just doesn't seem designed for women with big tits unless they're plus-sized.