One of the more common concepts on this site is that of the "feminine side" of our personalities that we express when dressing. While this may be true for others, I've never felt that I've had one. My personality remains unchanged, although it may appear to others to have done so. I am just as likely to pick up a socket wrench as an eyebrow pencil (actually more likely as I gave up on makeup sometime back and actually prefer women who don't use it, or if they do, do so very lightly).
I don't think we should necessarily invoke some sort of multiple personality as an excuse for a clothing preference. Mine is perverse enough to come up with that on it's own. All I know is that the level of comfort afforded by a full length silk skirt is it's own reward and needs no such excuse.