How many breasts on an Uz?

Found some Uz pictures here and there, still hunting up a copy of Trollpak (it'll only be a matter of time), but I've got a question:

I vaguely recall that in one of the Wyrm's Footnotes or some other place, a picture was drawn of an Uzko temple prostitute (associated with Argan Argar, I think). Now, it was obvious that she was keeping herself at an anorexic state in order to cater to a human clientele, but I also think I recall she had at least three pairs of breasts, or possibly four.

But other art presents Uzko with only one pair of breasts. Which is the case? If it is only one pair of breasts, perhaps this is because this is what happens when one's species is associated with the Man rune.