I thought this too, but upon further inspection (I zoomed in so you wouldn't have to, which is equivalent to or worse than Jesus being crucified for the sins of the people) I have deduced that her tits are normal udders.  The only reason the one on our right looks small is because it's being framed by the shadow from her thumb and the outline of her hair.  If you look closely (and honestly, you should probably just take my word for it), you can see the line from the cleavage and tell that her tits are just as deflated, saggy, and grotesque as usual.