Gardevoirtaur

Grace was taking a midnight stroll in her family's woods outside her country home. She moved her flashlight back and forth, scanning the trees for animals. Her blonde hair reached down to her neck, and it was flapping in the cool breeze. Her green eyes darted from tree to tree as she walked the path littered with freshly fallen leaves, which caused a crunching sound every time she took a step with her hiking boots. She was wearing denim jeans and a T-shirt hidden by a black windbreaker, which she zippered quickly after another shot of cold wind. She continued to walk when she heard a rustle in between the trees. She turned and immediately pointed the flashlight in the direction of the sound, but found that nothing was there. She shrugged and cautiously continued at a faster pace when her forehead hit something that made an odd metallic clanking sound. She stepped back and shook her head as she examined the thing she ran into. She was amazed to find a silver chain necklace hanging from a bough of a nearby tree.  She plucked it from the branch and examined it more closely. She discovered that a Gardevoir pendant hung from the necklace. She put it on excitedly and continued to walk, although her walk had a bit of a giddy skip to it. She was about to stop and rest for a minute when she was overwhelmed in pleasure. She moaned and held her belly as her body began to change.

She groaned in pleasure as her legs became thinner and shorter as she started to levitate off the ground.  Her feet turned to points, causing her boots to fall to the ground. Her pants magically transformed into a snow white dress as her legs became softer and turned light green. The dress grew longer and longer, spilling out on the ground five feet in all directions. Two more stumps grew out of her waist, and her spine elongated on the hind end as the new dress grew even longer to accommodate the new appendages and still maintain its draping length. Her T-shirt and windbreaker also turned white and connected with the dress. The sleeves disappeared, and a light red diamond burst out of her chest and back. Her breasts exploded in size, barely contained by her new dress when it reached its full size of a G cup. Her hands turned three-fingered as a small leaf bracelet formed around her right wrist. The skin around her neck softened and turned white as her face became more rounded. Her eyes lightened slightly as her hair turned dark green and grew longer and longer, eventually trailing behind her seven feet. Her hair became curly, and light green highlights showed themselves as the white coloring enveloped the rest of her head and the transformations ended.
Grace stood in midair for a while, still engulfed in great pleasure and still with no idea what had just happened. The pleasure left without warning, leaving the girl feeling strangely empowered. That's when she realized that her body was different. She looked herself over and discovered she was a taur version of the Pokémon Gardevoir. She decided to hide in the woods and abandon her human life. She was fly through the sky with incredible ease when she decided to rest in a clearing for the night. She had just landed safely when another surge of pleasure engulfed her. She smiled and moaned as her boobs doubled in size and her hair and dress doubled in length. She grew exponentially in size, eventually towering over the trees that surrounded her. In coordination with this size growth, she levitated even higher, until she was floating forty feet above the ground.
She came to her senses and surveyed her slightly altered form and immense new size. She hugged herself in complete joy and flew off into the deep forest to live a happy life.