Yeah, the jump to DD on girls near 6'.0 tall have some huge hooters hanging off their chest. I mean the size is very significant, you almost want to say E or F cup from a guys standpoint looking at them.
I estimated 38-D because to most guys, "D" cup may not seem as big when identifying with a photo, in reality women who sport 38-D have some serious sized breasts.
Go and google "Wifey's World" Sandra O. She's around the same height, wears 38-DD and her boobs look h( . )( . )ter-ific. So, 38-D is just about right on the mystery girl there.
Possibly. Mind you Boobpedia has her at 5'5", making her a bit smaller (and from the looks of it more slender) than this girl.