You are so full of shit with your "relation terms, evolutionary terms, congruent" mess. This is America. People may dress however they wish. What's it to you if women wear pants (OMFG!) Or do you think all women who wear pants do so to attract other women?<quoted text>
I made nothing up.
If you read their own discriptions, that is "who they are". Or, asked on your terms, okay, why do they dress up masculine?
Anything you define in relational terms must also be understood in evolutionary terms and be congruent.
Your fear is causing you to miss the simple reality that genes/brain/body 'wiring' gets mixed up all the time. Even our hair color is a mix. Denying that that mix is sometimes faulty is just plain stupid.
The fear is all yours, honey. You cannot handle the uncertainty so you react with a typical control-freak attitude: Everyone must dress according to your standards so you don't freak out. Sorry, honey... life doesn't work that way... unless you think all women should be wearing black burkahs. Then you are in the wrong country.