@ the guys complaining that it's unrealistic to wear clothes under armor, you try it and tell us how comfortable it is going bare-chested and donning a metal plate of armor, not the most comfortable thing I can tell you.
Right, and I suppose that wearing a full silk outfit under a heavy padded arming jacket, which itself may or may not be under a layer of chainmail (if said mail isn't stitched onto the arming jacket outright) which itself is under the actual plate layer, is any better: nope, no friction, no blockage, no tearing, no additional sweat accumulation, nothing. Oh, and don't forget the big, frumpy flowing mage's robe that won't trip you up or get caught up in the heat of combat in any way! IMMERSION!