ShittyDarkSouls

While the question asked is a dumb one, it does bring up an interesting point: There's a surprising number of historical outfits for soldiers where they'd wear "skirts" of a fashion. Roman legionnaires being a classic example.

It's kind of just an easy way to apply armor that protects the groin area without being complicated to design. No one's curving a blade in between your thighs in battle.