The blast from the gun was instantaneous--and since Amanda had the muzzle of the growth ray jammed right into her newly-toned abs, the beam didn't have far to travel before it met the flesh it would reshape. Energy surged into Amanda in waves that made her tremble with pleasure. Previously she'd tasted the gun's power in short and limited bursts; to her knowledge, only Caroline had experienced anything more than a tiny flash from the growth gun. The super-buxom Amazon had described her experience as "orgasmic." Amanda didn't know a better word than that for what she was feeling. As the beam's power radiated all over her body, tracing the deeply cut lines in her muscular figure, she closed her eyes, drinking deeply in the sensation. She hadn't even started to grow yet and already she felt powerful. The gun's power rippled through her new muscles, stimulating her sinewy arms, defined legs, and overdeveloped chest muscles.

"Is it working?" Caroline asked, her head cocked to one side.

All Amanda could manage was something between a consonant and a moan: "Mmmmmm..."

As Caroline looked on, the smaller girl's body pulsed all over; muscle fibers fired as the gun's energy re-ordered them, pulled them taut, ripped them apart and sewed them back together with ten times their previous strength. Amanda threw her head back, closing her eyes tightly as her growth began. The sensations ramped up first in her abdominals, as new muscles burst from her rapidly strengthening core. Existing abs divided and separated into more sharply defined groups as even the tiniest muscles sprang to the fore, granted giant size and power by the gun's boundless energy. Amanda's hips and chest seemed to receive the gun's power simultaneously; as Caroline looked on, Amanda's glutes blossomed, giving her a plump but sculpted ass that looked impossibly gorgeous under the field's lights. At the same time, her pecs swelled and pushed out from her chest. Her bosom lifted as though supported by an expertly-crafted bra; her naked breasts needed no help to demand Caroline's attention.

Amanda flexed her arms as the energy passed through them, exploding deltoids, biceps, and triceps as it went. Amanda's muscles more than doubled in mass, easily making her Caroline's equal. As Amanda tensed each muscle, Caroline's jaw dropped again and again--it was as though the energy knew exactly where to place pound after pound of female muscle without compromising even an ounce of Amanda's feminine sexuality.

Amanda's thighs ballooned to twice their previous dimensions, growing into twin Sequoias to match Caroline's marble columns. Her calves rose up to an unbelievable size and definition. As Caroline watched, Amanda's traps stretched out past human maximums and crossed the threshhold into Amazonian size.

All the while Amanda's height increased as her built legs lengthened every second. She was pushing six feet by the time her growth began to decelerate.

"No, don't stop," she cried, clapping her hands to her breasts. "More! BIGGER!"

As though responding to its owner's demand, Amanda's body redoubled its growth. Her biceps swelled to outmatch even Caroline's, their mountainous peaks edging up toward Amanda's eye level. Her pecs redefined the phrase barrel-chested. A new maze of muscle definition criss-crossed her back. But the part of her growth Amanda clearly enjoyed most was the sudden spike in cup size: Rather than growing gradually, like the rest of her, Amanda's bustline increased in one massive burst. The single feminine growth spurt gave Amanda a set of tits that would've made pre-growth Caroline look like a pre-pubescent girl. They were bigger and rounder than any Amanda had ever seen, but incredibly healthy, pert, and firm. Perfect. Absolutely perfect.

Amanda's new surge pushed her past Caroline's height, as well; the now-smaller girl would guess that her benefactor had reached 6'7" or 6'8", easily. Along with her new stature came the most overgrown, supercharged, dead-sexy pumped physique that Caroline could imagine, complete with a killer set of superhuman curves. Amanda was a bombshell crossed with a behemoth, a vixen with the strength of a goliath.

Finally, Amanda's growth ceased.

"You about done?" Caroline joked. Amanda panted, surveying her body.

"I'm... I'm bigger than you!" she whispered, amazed.

"That you are." Caroline smiled a devilish smile. "Now..."