Doesn't it seem odd that the iron helmet looks different depending on if its worn by a male or female character?

This mod splits each helmet into two separate helmets. One uses the male model, and the other uses the female model. Where necessary, I have resized the helmet in order to fit using nifskope.

You can find both helmets being used by npc's in the world, and you can also find both helmets in the world generally. You cannot, however, craft the female variant ingame. I hope to get this to work in future variants, but haven't come up with an elegant solution quite yet.

There are no pre-requisites, and it is compatible with all texture mods.

The mod currently affects these helmets:
~Iron Helmet
~Ancient Nord Helmet
~Forsworn Headress