Hats. Hats are awesome and they make you look stylish.
There are also various treatments, including something called finasteride that I think a couple of the guys here have mentioned using, but that one can have side effects that counteract some of what your T does.
So... yeah. Hats. That, or just embrace the fact that your hair loss REALLY helps you pass. If you shave completely bald you may still have a feminine look, but literally NO ONE looks at typical male pattern baldness and thinks "I wonder if they have two x chromosomes."