If you're speaking of traditional kilts(what I believe most people think of when they refer to a kilt), then it's just the accessories that change the formality. However, if we take into account casual(less material, lower rise), and utility type kilts, then yes; the cut of the goes a long way in determining how formal you can make it.

Quote Originally Posted by Tattoo Bradley View Post
Though... I don't have any excuse for why my flashes are SO long.
Your flashes aren't that long. Part of what makes the flashes look long or short is the width of the cuffs of your hose. I try to make my cuffs at least 3 fingers wide for two reasons: To cover up the flashes and it looks better with my long skinny legs. I think your flashes look fine.