I'm not really sure that the huge_breasts tag is appropriate here. Certainly they are large_breasts, but I don't really think they look like they're twice the size of her head.

I dunno, I could be mistaken, and I don't want to start huge debate over it, but large just seems more fitting.

surely someone recognises this..?

I think the breast size is debatable. Like they aren't ridiculous in size but they are more than large. It's almost like you need three categories instead of two. Large for breasts that are a good handful or some more then huge for anything that would be quite heavy and hard to hide then massive for ludicrously large.