I think we need to move away from the concept of passability (meaning being mistaken for female) and look more towards presentation. By that, I mean that we take the time to present ourselves in a manner that is confident, well constructed (outfit coordinated and seasonal), and with a smile and an openness to the world. It does not matter whether you pass as female but that the world sees you as a well put together transgendered person, no matter what size or shape you are.