You go back to your sisters room and you decide to tell your sister what just happened and about the flashlight and she seems shocked but says that you can try masturbating as a girl since you caught her teasing her clit. Your parents are out of town and you are watching her over the weekend so you are in the clear. she shines the light on your head at max pink and your face becomes very feminine. She lowers it and stops for a few second at your chest which grows to about DD tits and keeps lowering it until it's almost at you 6 inch hardon. She says she wants to ride and you suggest trying to put a pussy underneath your dick. She tries but not before she turns it to blue and makes your dick about 10". When she goes under your balls, she is able to see a clit form and an opening that starts to leak out what looks like water and it turns out that your pussy has formed. She begins to grow jealous and finishes your legs with the light. She decides that maybe she could have a dick as well but she finds a feature that can add any part of any type of body anywhere on someone. She decides that she should put her pussy on top and dick on bottom to match with pussy and dick. When she finishes with her dick and pussy she also makes her tits a bit bigger (D) and you two find the bed and just get into it. When both of your 10" dicks are hard you insert them into each other and the pleasure is overwhelming. You both decide to lick each other's tits and maximize the pleasure and when she starts to cum the jizz comes oozing out your pussy as you reach orgasm yourself but neither of you stop and keep going into the night, fucking each other until the pleasure finally becomes too much and you both pass out