What does topping or bottomming have to do with gender?

for my its just a measure of my comfort in myself and feelings of acceptance. maybe i am too young to have really shifted? i am 26 though.

i appeared extremely butch until 15- from 15-22ish i slid into a tomboy/nerd sortof persona, though i had long hair.. and now im very very ghey.

i still wear "womens" shirts to work though.

when im happy in myself i appear very butch. when im hidey-ho-ing, i grow out my hair. weird.

But, but i never left.

I too have changed over the years, from slightly still femme, with longish hair and trying to wear makeup to make the ex happy, to chopping all the hair off, being a jar head and going to the complete other extreme as a source of not only self, but rebellion as well... as it stands now.. I just see me as me. I wear guys clothes, I only wear boxers, my hair is always short, and I have a swagger in my step. I am often confused as a guy, but dont see this as an insult, but more like an acceptance that I could be either or on any given day. I went from being a complete bottom, to being the constant top, and i must admit, I like the view from the top a whole lot more. i have had occasion to portray a dude, and kinda liked it.. im not ftm, and am not looking to be so, but i think that the fact that i can "bend" who I am and who I want to be at any given time is amazing!

I fluctuate on a daily basis, but I generally center on hippie chick. I don't wear makeup or shave my legs or pluck my eyebrows. I wear loose (but female) jeans and converse.
But sometimes I wear flowy skirts and let my hair down. I also have big boobs and I don't wear minimizers or anything... so they're pretty obvious.
I'm generally a top, although I'm not very sexual -- which is actually part of the reason I prefer to top. I'm a little uncomfortable bottoming. But that's not really related to my gender expression.
A lot of my gender expression is in my behavior rather than my clothing. I act rather androgynous and kind of tomboyish-tough-girl, which I think pushes me more toward androgyny than my clothes do.