Pity the modern man who goes with the 3-prong outfit, while the old-fashioned girl has only the 2-prong pattern! Of course, most gals prefer twist-lock, to keep you from escaping!
I suppose in this "politcally correct" day and age, one should ask if they have two "alternative lifestyle" versions of the costume... perhaps one with two duplex receptacles, and another with two, non-polarized plugs?