Get them naked

You reach behind Alyssa's back and undo her bra, gently pulling it off of her. Then you slide her little panties down her legs and take them off, and spread her legs a little so you can see her tight slit. You get your sister ready for you next, and she moves a little in her sleep but doesn't wake up. You're more careful with Anna, slowly removing her panties and bra making sure not to disturb her.

Her body stays still this time, and your cock is almost painfully hard now at the sight of your sister naked in between her hot friends. You pull your shorts down and let it out, wondering which girl you should do first.