Please elaborate. I definitely didn't want to to go for "daz3d asset pack nr X" for the girls. To me personally, supermodel looks are a bit of a turn-off. I enjoy the pretty but she'll never be the cover of a fashion magazine look more, both for faces and bodies. But I certainly don't want to create something that's unattractive. Could you point to some particular feature(s) on them that disturb you?
So its less of them looking unattractive and more of their proportions being off.
Maybe the angles make it look worse then it really is but this is all I have to go off of so, the facial proportions are all wrong. Girl on the lest has a super small forehead (on its own that's fine, some people do), a really elongated face and eyes that are a little bit too big. The girl on the right possibly has the same eye issue, hard to tell at the angle. But her mouth is really low on her face for how big it is, same small forehead, and huge honker for a nose. Also possible huge ears.
Its really hard to actually tell how big the issues are at this angle, but they are strange looking. Of course all this matters if your going for realism, if you aren't then you can ignore everything I said.
On a positive not their bodies look really good.