Fanglish - I wish Deviant Art had a comment like button like FB. While showy this is completely impractical for armor on anyone. None of her vitals are protected. And yes, without a lining this would be quite uncomfortable.
a Witch Elf is a dark elf assassin who craves blood and worships Khaine, the Lord of Murder. she craves the feel and smell of blood against her bare flesh. Witch Elves, being dark elves, can also live for thousands of years, so chances are this character has hand centuries of practice eviscerating people and can do more damage naked than most humans can in a lifetime of careful planning and artillery.
So yes, by today's real world standards this armor is ridiculous. in the world of Warhammer is allows for a deadly combination of beauty, flexibility, and gore. taken out of context ANYthing from a fantasy world is ludicrous, no reason to single out sexy armor