Experiment first

"As tempting as you are, I think it would be better to test out our powers a bit first, just so we know what possibilities we exactly have" you try to explain Mia. At first she looks disappointed, but soon enough she says "Yeah, you're probably right. It would probably be best to test our limits before we hurt ourselves or someone else..." You see her think for a second before she says "So you said you 'replace' someone when you become them. Do you think you'd replace me?!" "Well, only one way to find out" you answer, not knowing if this really is the best idea. "I guess so" you are suprised as Mia seemed to be ok with it. She walks to her wardrobe and hands you a few of her clothes. You quickly undress yourself, which was nothing new for Mia. First of all she hands you a pair of white socks, which you use to give yourself her feet. Mia carefully watches as you begin to transform into her. Next up were her panties and a black gym leggings. At first it was wierd, tucking your boner inside of her panties and trying to get your masculine legs inside of the tight leggings, but you managed it. Both of you watch carefully as the outline of your boner, which was still clearly visible through the leggings, begins to dissappear. Your legs shrink while your hips seem to widen, only moments later you have Mia's beautiful ass, your new pussy already dripping from excitement. The leggings was so thight against your new legs, it felt wierd, yet so hot and forbidden. It was crazy to think you have made love to this body so often and now you are going to wear it as a disguise! Continuing the transformation you put on a matching bra and a simple T-shirt. Quickly your whole upper body shrinks while two cute, perfect B-cups form on your chest, your nipples already hard. Your take Mia's earrings into your new feminine hands and look at her. She clearly was confused as hell, looking at you, being an exact copy of her with only your original head left. "You ready?" You ask her. "Just do it" she answers, clearly uneased by the fact that she might dissappear in a couple of moments. You put on the earrings and put away your glasses as you look at her. You feel your hair getting longer and your eyesight gets better. Feeling a slight change in reality you know you've fully become Mia, yet it wasn't as strong as the other times. You look in front of you. Mia was still there! The two of you look at each otther for what feels like hours, waiting for something to happen. When you finally realise that the transformation is over you both let out a sigh of relief. "Thank god" Mia laughs "How are you feeling?" You concentrate a bit before saying "Well first of all, I don't have the same access to your mind then I had with the others. I think I have the same amount of access like you have when you morph into someone." "That's a relief" Mia interrupts you, understandably not wanting her boyfriend to see everything she had on her mind. "And as for my own self" you continue "I can feel the connection to my original self! Seems like my clone is back and by what I am sensing he is in his room down the street in our house!" You both look at each other, clearly having the same dirty thoughts. It's important to add that your original clothes didn't seem to have vanished! It seems that even your glasses have remained! Then Mia looks up and down the copy of her own body which was controlled by you. She gets more and more excited, thinking about all the things that are possible, before deciding they can continue experimenting later.

You watch as your girlfriend starts shapeshifting again. "Sorry babe" she explains "but I think it's time for a little break." You see her clothes transform into a simple T-shirt and a pair of jeans. Her hair transforms into a blonde ponytail while you see her chest and ass expanding again. Only after a few seconds Tara is standing in front of you again. "I always wanted to try having tits and an ass as big as hers" your girlfriend says, using Tara's voice "Care to help me testing this body 'Mia'?" You always thought Tara was hot. She had this "girl-next-door" vibe and the way her curves developed didn't really help you finding her less attractive. So of course you wouldn't miss a chance exploring her body with your girlfriend behind the wheel. The fact that she referred to you as Mia, a girl she was so much closer to than yourself, only getting you going even more. And after all you couldn't wait to test out Mia's body as well...

You close in on "Tara" (as you are going to refer to her for the rest of the time she is in her form) you whisper into her ear "Nothing I'd love to do more!" While one of your arms presses her into you while your other hand gets a grab of her ass through her jeans. It was so much bigger than Mia's and clearly not as tight as hers, still it felt so undeniably good. Mia's petite hands making Tara's ass feel even bigger than it already would have if you used your own male hands. The two of you start to make out again, even though it definitely felt different then it used to do. You feel how different this body is and feel how different "Tara" was compared to her original body. In addition to that you feel her bigger breast mashing into your smaller ones. Tara didn't seem to be as patient as you were because not after long you feel her hands grab the hem of your shirt and start to undress you. When you're wearing nothing but Mia's panties and bra she throws you on the bed and you watch as she begins stripping. First she strips out of her jeans, showing you her big ass in beautiful white panties. Slowly closing in on you she looks you deeply into your eyes as she throws of her shirt, allowing you to see her tits in a matching white bra. With the both of you only in your underwear she joins you on the bed and the two of you start to make out again. After one turn you had Tara laying beneath you, completely at your mercy. Slowly you start kissing down her neck until you arrive at her breast. Her breathing gets heavy as you open her bra and throw it away, finally allowing yourself to see Tara's beautiful breasts. Using your and Mia's memories you start to massage, kiss and fondle those breast as good as you could, starting an concert of moans from the girl beneath you. Soon enough you let one of your hands wander down between Tara's legs and watch as you move her panties aside exposing her dripping slit. You start fingering her while your other hand helped your mouth to caress your partner's tits and not after long Tara reaches her first orgasm. You give her a kiss saying "That was fucking hot!" She turns both of you around so that now she's on top of you. "Oh, we're far from finished" she says while grinding her dripping pussy on your crotch. Of course you were dripping wet too and now you watched Tara sit between your legs and slowly take off your soaked panties. You take off the bra your wearing and start massaging the tits you've held in your original hands so often as you see Tara's face closing in on your crotch. Then you start to feel your girlfriend eat out the pussy she was wearing all her life and you are already close to cumming right there and then. But you gather yourself for a bit longer as you feel Tara's tongue invade your vagina. You moan through the room and you finally break when you feel two fingers join the tongue inside of you. Not long after she just started your legs shake next to Tara's head as you slightly squirt onto her face, an incredible orgasm washing over you.