[Formendacil]

Perhaps the likeness in appearance between dwarf men and women is due to the fact that other races (Elves, Men, Hobbits, etc..) were generally unaware that Dwarves REALLY liked their beards, and ALWAYS had them....

I mean, perhaps they occasionally saw a Dwarf without a beard, but simply thought it was a more civilised clean-shaven one? After all, the Dwarves were pretty secretive, so it's unlikely that they would have given away the secret...

That's the only thought I've got. Other than that, the only thought that comes to mind is that Dwarf women actually DID have beards, scary as the thought is...