You are going to look great as a sissy slut

 
Selena has caught you one too many times going through her things. Today, she's going to surface all of those hidden desires in you to become a woman. Prepare for your life as a sissy.
 
I've caught you going through my makeup, I've caught you going through my lingerie. Look, this needs to stop, and the only way I can come to terms with what's happening is if I turn you into a sissy. You clearly want to know what it's like to be a woman, so why are we wasting time pretending that you're a man?
 
Here. Try these panties on and see how they fit. I'm actually quite impressed - your package is barely noticeable! Wow, you're really loving this, aren't you. How about I get some makeup out and I dress you up all nice and pretty like a beautiful lady? You're so gorgeous when we dive into your hidden sissy fantasies.
 
- Mistress Selena