Pictish warrior woman. Chest protection should be worn as that, protection, and not to sexualize a female warrior. Some Celtic women preferred to fight naked/with bare chest, some Picts seemed to have also favoured very light armour, for mobility plus a little protection, and the females would want to protect their sensitive breasts! Depicting a 'warrior' wearing a bikini that pushes her breasts out is as ridiculous as it's innefective. It's VERY diferent to wear a breast PROTECTOR.
it's not until you see situations flipped around that you realize the ridiculousness of "normalcy". e.g. like how comic book heroes can get away with wearing spandex and still be considered macho (but maybe not in this context).