After such a rapid and intense growth, Charity fell asleep, though more like a powernap instead of a multi-hour sleep. But that didn't stop the potion to work even more wonders on her entire body.
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Upstairs, Amber had to handle what felt like the most amount of laundry in years. She was visibly shaking, not wanting to waste a single minute anymore to get back to the potion, to her masterplan. It really didn't help her that her mother was especially clumsy today, accidentally letting go of various bedsheets, only for her to pick them up again and fold them anew. Amber's impatience was growing, just like her sister's body was downstairs.
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Despite being knocked out from all the incredible pleasure from the growth, that didn't hinder the second growth spurt from occuring.
Her already huge, basketball-sized boobs grew with each breath she took. But instead of resting on or beside her big torso, her still-growing pecs kept them pointing towards the ceiling in a perfectly spherical shape. Her now closer to 3 1/2" nipples looked hard enough to pierce through rocks.
All the while she gained several inches of height, something that didn't happen the first time. Gone was her quite tall 5'10" body, as it grew by more than half a foot, stopping at 6'6". But that was not the end of her growth, not even close...
Her bulky, but visibly soft arms looked as if someone was just inflating them with a pump. Surge after surge, inch after inch, both her upper and lower arms gained mass worth years of training in mere minutes, if not seconds. Meanwhile those same muscles got more defined and harder underneath the smooth, silky layer of skin, indicating a drastic increase in strength as well as their size. Her biceps were close to 25 inches around as the growth seemed to slow down.
Down below, her core was gifted with further layers of hard, tight muscles. Her pretty cut 6-pack slowly turned into an 8-pack as the crevices between them got that much deeper. They looked like they could withstand any kind of punch and break the attackers hand in the meantime with ease. Not just that, multiple obliques started forming around them.
Her butt was filled with part muscle, part fat to make her both extremely sexy and strong. An literal assshelf was lifting up her hips from the cracked concrete floor. So far, in fact, that a large gap formed between it and her back muscles.
Her phenomenally large thighs surged with cords of muscle, bulging at the seams. Even the slightest of movement would cause them to involuntarily flex to gigantic sizes. But still, soft layers of fat covered her bowlingball-crushing upper legs to make them look feminine and sexy. The same was true for her calves. As much as they grew beneath the tight layer of skin, they never managed to distract from her stunningly feminine figure the slightest bit.
Lastly, her face underwent some incredible changes. She emitted an aura of pure sexiness with her cute nose, bright, but deep blue eyes and long eyelashes. Blindingly white teeth hid underneath her kissable pink lips. Whereas before she was a bombshell when it comes to facial features, she was now probably the best looking woman on earth. Dozens of times more gorgeous than her petite twin sister.
Just before stopping the growth, the effects of the potion decided to continuously pump her already incredibly powerful muscles with even more unreasonable strength. There was never too much of a good thing... well, for Charity at least, obviously.
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As Amber's mother finally freed her from her tidious task, she sprinted downstairs to take the potion, only to make the most unpleasant and unwanted find she could have ever imagined: