Then suddenly, her body grows enormously, until the button of shirt burst. These buttocks, breasts and belly were getting bigger. She understood that the nanorobots in her body were producing fat in mass and multiplied the quantity.

Her body became heavy, but could still walk, despite her belly almost touching the floor and that these thighs are over the stuff.

Art : https://www.furaffinity.net/user/omegaoverdrive