"Ahhhh finally it is done, i have created the muscle growth belt!", Walking out into the forest she strapped the belt onto herself and stood there, anticipating her growth by her own hands, she pressed the button on the belt, there was no telling how large she would become! It started, her growth made her shoot up almost instantly, her muscles roaring and filling with mass, her chest grew and grew, her boobs filling and tearing her clothes within moments, her shoudler and back grew muscles so immense they almost dwarfed her house entirely, her legs and arms and stomach all playing catch up in muscle mass, she let out a pleasurable moan as she embraced the feeling of her body growing every direction insanely, growing and growing and growing she let out more and more moans, she was a hulking winx girl now! Her biceps alone dwarfed her house, as she rose above the trees at 30 feet tall she could only flex as hard as she could and let more power, more muscle and more mass flood her great, bulging body, she was loving every second of sensual, orgasmic growth, as her frame quickly doubled and then redoubled in size again it was a miracle that her privates were still covered, even if just by the tiniest of leaves, her nipples protruding through them though, she let out another huge moan of pleasure as she grew on and on still! Seemingly never stopping, once more her muscles detonated and rippled outwards and she became as wide and full of muscle as she was tall, her breasts surging to be the largest part of her body, double the size of her two story house biceps, they would touch the ground if her fairy magic and rippling pectorals werent keeping them afloat! Her body continued to grow and bulge for another few minutes until she stopped at 40 feet, the belt had grown with her around her thin yet 30 pack stomach and she let out a sigh of pleasure and also disappointment that it had ended so soon.