Jane The Gynoid Mollusk Girl

Jon began to feel a pain in his pants, so he quickly stripped them off to find that from his crotch to about mid-thigh, his lower body was encased in one unbroken sheet of epidermis.
It quickly encased the rest of his lower body like a cocoon, and, also like a cocoon, changes began to take place within.
Jon could feel his leg muscles merge into a single mass.
Once that was done, his leg bones dissolved, leaving him standing on a column of muscle.
As his leg bones dissolved, he slowly sunk to the floor as he came to rest on the lower body of a gastropod.
The skin on his single foot quickly became freckled as the materials once used as bones in his legs and feet formed into a coiled shell on the back of his foot.
After his transformation had seemingly paused, he looked in the mirror.
He nearly screamed when he saw eyestalks sticking out of his eye sockets, the skin upon which was also mottled, like his lower body.
Then, his face became softer, and more feminine, as a puffy feeling emerged in his chest.
Where those bumps where his nipples should be?
Suddenly, with an audible flump, his chest grew two large masses of flesh instantly recognisable as F cupped breasts.
His shirt, unable to hold so much mass, promptly ripped in half.
He looked down at his manhood to see it was no longer manhood, but instead had been replaced with womanhood.
Jon looked at the mirror again to see what appeared to be small octopus tentacles sticking out from inside her mouth. He quickly gained mastery of the eight limbs, which he quickly realized each to be around three to four feet long.
Then, excruciating pain erupted on the sides of her head.
He looked in the mirror to see her ears being replaced by domes.
Long, slender antennae grew out of the tops of them, and the world began to look as if he was looking at it with lenses.
Again, the mirror showed her that her eyes appeared to have been replaced with lenses.
"What the hell is happening to me?!" Jon cried.
Unfortunately, there was no reply.
Jon gulped, and to her surprise, her tentacles withdrew into her mouth.
Jon looked at her hands. Her fingernails had fallen off, she had maybe three fingers and two thumbs on each hand, and a thick layer of skin webbed the digits together.
Now her hair lightened from black to a golden blonde, and began to grow in length.
It quickly reached her belly button, where it stopped. Jon would've brushed the hair out of her face if it wasn't for the fact it didn't obscure her vision thanks to her new eyestalks, so she ignored the strange feeling, and focused on her reflection in the mirror.
Her lips, what she could see at least, had turned midnight black. Her nose had turned a lighter shade of black, retextured itself, and the nostrils upon it had assumed a more canine shape, while the overall shape of her nose hadn't changed very much.
Her nose also seemed to have bent back a little.
Jon - wait, why was she calling herself Jon? wasn't her name Jane? - Jane felt a prickling sensation on her upper lip, and decided to see how flexible her eyestalks were, and bent them just enough to see her upper lip splitting as her nose merged with it, and whiskers sprouting out from the sides as her nose assumed a more canine shape.
Oh well.
Jane noticed her perfect hourglass shape, her wider hips, and, of course, the overall beauty her body had even though it was plain to see she'd barely remained human.
But, her transformation still was far from over, even if she didn't yet realize it.