>>719812139
Elf mages store mana in the breasts so huge titty plate is an intimidating show of force for Elven battlemages. In reality most of them don't fill out the full size of the ceremonial armor. Those in the upper class who don't even fight on the front lines are free to make their breastplates bigger and bigger to the point of impracticality.
Of course, this means the most terrifying sight is a battlemage wearing such heavy plate you can't make out a chest shape, because she has no need for petty bragging and her power speaks for itself.
(unfortunately pic related is not an elf and would have zero mana by these rules)