If you want to parade around town in a skirt and beard, that's not illegal. It will, however, shock and disgust the majority of the general public. You can say they don't understand you and it may be true but that doesn't change their feelings towards you.
It's your life and you can live it however you want to (within the law of course). What about your family members? Wife and children? Employer? What you do will affect them.
