Y'know, innovations in armor have come such a long way... So much so that the humble knight's armor just doesn't cut it anymore.

Nowadays, a skimpy set of lingerie provides all of the necessary protection.

Lilac thinks this is bullshit. A massive defensive boost shouldn't require such a revealing sacrifice.
But, hear me out, there are pros: comfortable to wear (kinda), very flexible and breathable (lol), and easy to take on and off (yep). You can't exactly say that about the hunk of metal you call a suit of armor. Etna (Lilac's armorer) put a ton of thought and consideration into this decision, but in the end, it was a no-brainer.
Besides, Lilac can always don her usual shirt and shorts on top (it's like sprinkles on a cake, it adds a bit to the overall product).

_{Just some dumbass idea I had earlier. I've been on sort of a humor kick, trying to make slightly funny scenarios.
(pardon my armor drawing skills, I don't draw armor, usually.)}