Poll: How short is too short for a skirt?

Conversation was sparked by yesterday’s TPS Report, and we thought it might be a good idea to try and get a consensus on this:  how short of a skirt can a professional woman get away with?  See our uber-fancy diagram, and vote below.

Our $.02 — D would probably be our limit, but only with dark tights… We heard a rule long ago that the higher your skirt the lower your heel should be; we’ve always found success with that.