Sarah smiles, and then slowly walks up to you. "These pants have gotten so tight..." She says, and flips off the top button of her pants, and slowly unzips it, walking closer to you. You gulp and she pulls them down her now longer legs, and then stands up. You see the panties, now too small for her, barely covering her sensitive area. Above that, you see up to her bellybutton before the shirt bottom blocks your view of her body, which she slowly takes off as well.
You lick your lips, and get turned on by how much her breasts are bulging out of her B cup bra. She smiles, and then touches another table beside her, which starts to shrink, causing her boobs to bulge more and more. You see the nipples slowly move upward out of her bra, free of their small prison. They bulge out the top and sides, pushing on her bra, which refused to move. You see her breasts quiver slightly, then a bit more quickly, then the bra snaps, flies across and lands on your head, exposing her giant, beautiful breasts.
You move it, and stare in awe at her body, which is standing right in front you at this point. She unbuttons your pants, and pulls them down as you stay sitting on the couch. She gets on her knees, and smiles, seeing your foot long penis already poking out of your underwear. She pulls right up to you, her giant breasts resting against your knees after pulling off your underwear, and stares in awe at your huge member.
She looks you in the eye, and begins to stroke you with her right hand, her breasts patting against your knees, and she shakes her butt left and right. She slowly moves her left hand up to the small desk near you, and touches it, and it starts to shrink. You feel something you have never felt before rushing into your penis. It's like pure energy, and you watch in awe as your foot long penis grows longer and thicker in her stroking hand.
You swell, as Sarah watches your penis intently and happily grow and grow. 13 inches, 14, 15, bigger and bigger. longer and thicker, harder and stronger.
Eventually you feel the energy flow from your penis into the rest of your body. You feel your knees begin to push into Sarah's breasts as you realize your legs are growing longer. You're muscles swelling, you feel the remaining clothes around you tightening.
Sarah stroked you and put all the size of the desk into your body, and then moved her hand to the couch you were sitting on, which starts to shrink under you as your body swells larger and larger in all directions.