>>2220728Averages vary, but internationally a C or D's the average of averages; all things considered. So, if we accept AA as the 0 point, and A as 1, then your average'd be ~3.5; double that's 7, so anything much bigger than a G would be the cut-off for "common" +size boobs; the soft cap, if you will. Then, rounding up to +4, I'd guestimate the hard cap for "realistic" natraul bust sizes to be about a J (All in the context that the woman they're attached to isn't some hambeast). That'd be in terms of what steps from "extra large" to "fetishist-oriented."
I'm a member of the latter though, so for me, as long as I can see her waistline it feels like "normal"-big, for anime boobs.