A reminder that “male” armour usually works just as well with female bodies. If you’re trying to design something practical, useful and historical looking (or even just something the follows the laws of physics), never ever put in boob cups. Aside from the fact they give the armour a sort of “focus point” for swords, falling down on them would send the shock right into the sternum. Regular plate armour leaves enough space between the chest for small to medium sized boobs anyway. But say the girl underneath is a buxom lass, you can still avoid that cleavage, boob cup shape while leaving enough space for her melons.
But aside from plate, things like the top picture, chainmail and all sorts of leather armour are unisex. I know you might be thinking that the feminine thing to do when designing a female warrior is to show off a bit of thigh or neck or cleavage or something, but really, understand that if the goal of that armour is to protect completely, putting an obvious gap in it is a terrible idea and she’ll surely get stabbed very quickly.
And don’t feed me the “it’s magic, I don’t got to explain shit” line. Bollox. Magic armour and forcefields need to make some sense too. Show me something that LOOKS like it’s generating a barrier over the character instead of just saying “Oh the G-string of Invulnerability is just as good as wearing full plate anyway”. If that’s the case, everyone would wear it. And why can’t they just tie it around their belt? Make me believe that your magic armour and spells have logic to them. If not, please don’t play your world straight. I’m all for super stylised designs as long as they’re sold as such, but if you’re trying to make a world that feels real enough for people to believe and get immersed in, think this stuff out. If you’ve designed someone with sparse, gapped armour that shows skin, give your character a reason to wear it.