I've been told I always looked a lot like my mother, even before I started crossdressing, never mind the whole sex change stuff. Short, skinny, sandy blonde hair and even a similar face.

And, it turns out, totally feminine. I always wore my hair long, and it didn't take me long before I was spending time up in my bedroom wearing women's clothes. I actually stole a coupl e of skirts from school, and found my mother's old clothes, and it was great to be kneeling on my bed in a short skirt and bra, fingering my ass.

The girls I knew were okay, but the only interest I had in them was seeing if I could copy their hairstyles - most of the time, my hair wasn't long enough - and in trying to sound like them. The idea of approaching boys was what I would be upstairs fingering myself to, but ytterly terrifying, so I stayed single for quite a while, my entire experience being with my fingers and, later, anything I could safely put up my butt.

It was near the end of school for my brother - I was in the year behidn him - when that changed, though. I forget exactly when, but I think it was late in the year. Dark early and all that.

I was, as usual, up on my knees on my bed, wearing nothing but a skirt - an old one, that was really short on me by then - and some thigh-high socks I had snuck out to buy myself.. I had my hair in plaits and was practising my girly moans as I fucked myself with a hairbrush handle with my eyes closed, imaginng I was being fucked by some big, hung guy.

I don't know how long he had been there, but  when I opened my eyes, my door was open and my brother was there, jerking off.

I was horny enough that rather than shitting myself that I'd been caught, I just ... went for it. My room wasn't that large, and I was right off my bed and onto the floor, grabbing his cock and stuffing it as much as I could into my mouth.

I couldn't take much of it, if I'm homest. My mother and I are short, but my brother takes after my father, and both have over a foot of height on me, are much broader and, even back then, my brother had a big dick. Not just long but thick. Really thick. I got the head into my mouth and began licking, but that was all I could take. 

Not that I minded much. I licked and sucked, and my free hand kept fucking my ass with that hairbrush as he came in my mouth, and that's how it all started.