You look to your GF/Mrs. Bradley and her "daughter" Claire wondering what is going to happen next. First you notice that Claire's wiry body is morphing and gaining some muscle and curves at the same time. She also gains height going from being 5'4'' to 5'11'' within the span of a minute, her flat stomach gets toned and she gets an 8 pack of abs while still looking feminine. She starts to gain muscles on her calf's and arms. Her waist narrows and her hips expand and her breasts enlarge to become a nice pair of DD cup breasts that are still in proportion to her body giving her a killer hourglass figure. Her lips become even more kissable and her face morphs a little. Then her shoulder length ginger hair slowly turns black gets thicker, fuller, and starts to lengthen until it reaches her hips. Your girlfriend is going through similar changes although she loses more wrinkles and her breasts perk up. Both girls let out a moan as their transformations finish and you now have two identical statuesque ultra feminine supermodels of women looking at you with lust.
"So [Your name] what do you think?" Your girlfriend asks
"Wow just wow!" Is all you can muster
"Perfect! Katie and I will love this, won't we?" Claire says before kissing Katie
This was hot for you in so many ways. One, you get to have sex with two very attractive "twins" making out in front of you, plus you can tell Claire and Katie are getting a kick out of it, they are pretty close as they have known each other since they were 4 and when Katie isn't spending time with you, it's with Claire. Claire and Katie's make out session continues to intensify as you slowly stroke your cock, Claire suckles Katie's breasts and Katie starts to moan,
"Yes sis!"
You want to go in there and fuck both of them, but you decide to stick back and watch as you don't want to disturb the show. You try to control your stroking and breathing as you don't want to cum early. Katie gets on top of Claire and startles her face making Claire eat her out as Katie plays with her breasts. Katie's moaning is music to your ears as you continue to stroke and moan. You try so hard to fight your need to cum and you feel a tiny bit of pre-cum drip out. Katie and Claire switch positions and now Katie is shoving her fingers in Claire's pussy and she moans with the same voice as your girlfriend.
"Dammit sis, don't stop, fuck me faster!" Claire says as she also looks directly at you knowing you're enjoying this little "incestous" show on.
As Claire reaches her orgasm you cannot hold it any longer and you grunt letting loads of your cum on the floor. Katie and Claire crawl still tired for their sex to lick your cum off the floor and kiss each other with your cum smeared on their faces.
"We hope you liked the show!" They said in unison