Turn them agaisnt each other

John knew Gianna and Brianna were very close despite each thinking she was hotter than the other. He decided to screw with them and pitch them against each other.

Brianna cannot wear anything below the waist as any clothing that comes in contact to her skin between her waist and feet causes intense itching. She will blame Gianna for this.

Gianna cannot wear any clothes above her hips as any clothing that touches her body above her hips causes intense itching. She will blame Brianna for this.

John smiled.

1) Enhance Gianna's breasts and Brianna's butt

2) Make Gianna crave cum on her tits and Brianna crave cum on her ass

3) Turn them into nymphos

4) Something else