M4F - A witches beauty spell accidentally taken to the extreme

Wizards, warlocks and witches are normal professions in this world, it just requires a lot of studying. Well maybe 'normal' is exaggerating since if you mess up a spell the outcome can be dangerous or hilariousness. Only the brave ~~or dumb~~ try to start a carrier in spell-craft and your one of the few who are trying to learn from the internet. The first potion that you try to make is for beauty since the instructions sound simple enough but you added in a bit too much harpy hair.... or maybe too much sphinx milk. Your body goes through some drastic changes after you drank it, gaining huge soft curves and a heightened libido.