Must be a convention

In the last two days I have seen at least 10 transvestites around Tokyo. Now this is just weird, because everyone is pretty strait and narrow in public here (well other than the goths in Harajuku). So why are there tons of transvestites wobbling (er walking) around Tokyo all of a sudden? I mean, come on guys, the bad fake hair, giant feet, and well the Adam's apple kinda give it away. I must say I do admire them for having the courage to go out and walk around though - because everyone stares at them, albeit furtively. Anyway, just a weird random observation on my part.