I need some advice. How do I get my stepsister whom I just discovered has a big dick and is a dominant top tgirl to fuck me and make me her sissy bitch. At first I thought she was a stud lesbian because I've always seen her with her best friend and one night I heard them fucking. The best friend was moaning and groaning in pleasure and saying her name, telling my stepsister to fuck her harder. I found out my stepsister is a tgirl one night when I walked in on her while she was in the bathroom and that dick turned me on. I've never been fucked or even thought about it even though I love sucking dick but after seeing her I've been watching dominant trans porn with the tranny dominating the guy, fucking him like a real girl and turning him into a obedient submissive sissy and I want that with my stepsister.