I think you pass for as a teenage boy. And you know what that is fine I am 40 and everyone thinks I am a 20 year old male. You have no hips and that helps a lot. I honestly believe most of passing is in confidence and not really giving a da**. Just know you pass and don;t care what anyone else thinks and you will be fine. And all else fails pack with something so big no one would ever mistake you for a female (ok that was a joke)
Cheers,
Andrew
Working in Stealth mode, living as myself