Krissy let out a pained grunt. "Grrrrnnnhhhh!" Her entire body tensed up and seemed to vibrate as her entire body began to change shape. Her vibrating form began to pulsate and expand. Narissa's eyes widened and the lizard was truly startled as on top of her, Krissy grew taller, heavier, and more muscular. The girl's clothing, her black shirt and blue jeans, began to grow tighter over a frame soaking up muscle. With a last gasping sense of relief, Krissy fell forward slightly, hands held on Narissa's chest, and together their heartbeats joined in rythym as Krissy looked down at herself, her grown musculature, her harder curves and tighter body, and felt another spasm starting almost immediately.
"Oh shiiiiiiii-" She grunted through gritted teeth, and began pulsating again. Oddly, the sweat coating her body had ceased to fall, and it seemed that all over her skin had grown coarser and taken on a fine bumpy texture. Narissa gasped out loud, staring in shock, as the waist of Krissy's jeans forced itself down her ass, above which the start of a slim and rapidly growing tail began to push out behind her. She grunted and writhed, her growing pulsating legs slipping off Narissa's waist and down her thighs to straddle to lizard. The enlarging human began to look less and less so, her form becoming inhumanly strong and oddly angled, her face and nose joining into one and pushing forward into a blunt muzzle. Her ears and hair receeding even as sharp small nails began to push out from her hands and feet.
Krissy managed a final overwhelmed stare of complete shock, staring into Narissa's eyes with her own slitted pupils, before the end of the process pushed her on. Pulsating one final incredible time, the human dehumanized completely. Narissa grabbed Krissy's shoulders with trembling fingers as she grew large and reptilian, bursting the seams of her pants down the middle and growling as her face pushed forward, her skin began to darken and change to leathery scales, and her huge muscular body gained more size and definition. Through growls and hisses, Krissy managed to let out a huge roar on top of Narissa, her teeth coming to sharp points and growing into fangs, her flesh growing thick and leathery, her tail slithering out more and more until it matched and then exceeded Narissa's own.
Like the lizard, Krissy's hands and feet warped slightly. Her hands became huge powerful paws with sharp black claws at the tips, her feet curled and twisted into three large toes with a big grasping claw at the rear, and her thick ankles and lower legs snapped and warped into digitigrade legs just like Narissa. Even through the tattered remains of her jeans, Krissy now looked powerful and beastial, with thick and powerful muscles twitching as they continued to expand more and more on top of Narissa, who could only lay in total bewilderment as Krissy grew, and grew, and grew into a heavy muscular beast of a lizard woman, almost a full foot taller than Narissa. Clad in ripped jeans struggling to cling to a tight hardened waistline, and a shirt pulled so tight it was slipping up to her modest breasts, Krissy let out a terrific lust-fuelled growl as she opened her new yellowed eyes and blinked with pure ecstasy as she towered over the now comparatively smaller Narissa.
Krissy let out a hiss and threw her head back on a longer more flexible neck as the change completed, and now where there had been a small young teenage girl there was now a massive and deliciously powerful reptile creature like Narissa, thick and heavy with athletic muscle pumped to bodybuilding proportions, her own size and height pushed beyond the smaller lizard woman's. Krissy now made Narissa look positively puny pinned underneath her hardened reptilian body.
Narissa blinked in wide eyed wonder as Krissy adjusted herself and began breathing heavily from her new snout, pinning down the smaller lizard, and she squirmed slightly as Krissy blinked her inner eyelids, stared down at the smaller reptile woman, and licked her scaly snout with a thick and flexible tongue.
"Y-You're beautiful..." Narissa whispered, her obvious arousal kicking in fully as she stared at the huge and powerful swells of Krissy's tight and jacked muscle, rubbing a hand down her fine curves and perfect lines and pausing to grip a solid and absolutely hard waist that was beyond human power but yet somehow sloping and feminine. Her own colours were more of a steel blue than Narissa's green, nearing gray and brown across her tail, front, and sides.
"Rrrrrgh... so are you." Krissy grinned toothily, rumbling deeply with a lusty deeper voice as she took stock of Narissa's trembling form beneath her and growled at the sensations flooding her new form. The strength. The power. The senses. Every movement pulled her sharply defined muscularity and reminded her of how large and powerful she now was.
Ty stood in amazement at the edge of the upstairs hallway, watching with delight as the two lizard women began to engage each other. Krissy sat up again on her massive thighs, placed a claw under her tattered jeans, and cleanly split them apart with a razor sharp cut. Growling her excitement, she pulled at her shirt and tore it away from her torso, tossing both destroyed articles away, her large tail swaying eagerly from side to side with a predatory precision.
Narissa's eyes ventured over the fine lizardess, her chiseled body, her still large (for a lizard woman) breasts, and their eyes met as the smaller reptile blushed deep teal across her flesh. The larger creature leaned down over the smaller, straddling and shadowing her body, and touched her warm vent to Narissa's groin, growling animalistically and licking her lips eagerly.
"Yes..." Narissa whispered, near breathlessly. "Yes... take me, my goddess."
As the larger reptile woman pulled down the 'zipper' on Narissa's jumpsuit, Ty felt himself grow stiffer. He had used Narissa's mind reading trick in the other direction, probing his own mind into hers as she did to him and finding her ideal female partner, a huge and ripped lady lizard who could dominate her and please her like no man.
As the two giant creatures embraced and began to lick and kiss each other's maw, hissing and rumbling, Ty wondered almost as an afterthought if he could change himself, too...