Kacey was happy with her boyfriend, for the most part. However he had a weird fetish, one that she refused to take part in. He wanted her to dress up in a halter and pretend to be a pony. He said it turned him on, but there was no way Kacey was going to get involved in weirdness like that. What did he think she was?

For the most part though, Kacey was deliriously happy to be with Jake, he was a most accomplished lover and he was hung like a horse. Thoughtful too, which was why when he had asked her to wait over at his place one day to take a delivery, she agreed. It was the least Kacey could do, the most would be marry him, but that she hoped would come in time.For the most part though, Kacey was deliriously happy to be with Jake, he was a most accomplished lover and he was hung like a horse. Thoughtful too, which was why when he had asked her to wait over at his place one day to take a delivery, she agreed. It was the least Kacey could do, the most would be marry him, but that she hoped would come in time.

Kacey was 27, an ordinary all american girl with big breasts. Her face was pleasant without being beautiful but her chest had always made up for that. Along with her long blonde hair. She stopped her car outside Jakes house and walked up to his door. She found the key under the mat. Inside the house felt cold, she started up the heating and turned on the television, great, Jenny Jones was on.

Later there came a knock on the door, she went to it but all she dound outside was a cardboard box, no note, nothing. She looked around, there was no one in sight. So she picked up the box, closing the front door behind her.

The box felt, warm. It was very weird, what could it be? Kacey opened the box in the living room. "Wow!" she breathed. It was a very strange looking body suit. She lifted it entire, out of the box. She'd heard of catsuits. But this was more like a ponysuit.
It felt like real hide, and it had what felt like real pony hair all over it, dark, dark black hair, complete with a pony tail. It was open at the front to reveal the wearers breasts and part of their tum. It was a one piece, with parts of it, even covering the head. Also in the box was a pony mask, it looked pretty real. At the ends of the arms and legs, there were hooves attached. It was a pretty strange costume for someone to order but Jake did have a strange fetish. However by far the strangest thing about it was its warmth. It seemd to be as warm as a living thing.

It was still pretty cold in the house, and the more Kacey looked at the costume, the better it looked. It was so strange and kinky and..... well no one would ever know if she tried it out. Besides, she was freezing, and it would warm her up. She laughed at herself, self consciously aware, this wasn't like her. But it might be fun.

She pulled the suit about her. She pushed her arms and legs into the sleeves and felt that the hooves seemd to be somewhat hollow. Her toes and fingers sunk into them. They were full  of what felt like, warm cotton wool. The suits hide was warm and it made her skin sweat, where it touched. In fact, it was so hot, she seemed to be sweating rivers. Rivers that seemd to wetten the costume about her, but the slickness was warm and seemed pleasurable. This suit was weird but it was cool. Kacey went to the living room mirror, balancing on her rear hooves she felt delicate and sensual. She looked at her reflection. The suit was loose in some places but it looked oddly sexy.

"Neigh!" she said into the mirror and laughed at herself. One thing she certainly didn't look like was a horse. Kacey told herself she'd have to take the suit off before Jake got home but then, like he wouldn't be thrilled to find her like this. Perhaps she'd wear it a while longer. She plumped herself down in front of the TV again. TV show followed TV show and she sat there till it was nearly time for Jake to be home, in half an hours time. She decided she'd remove the costume, she didn't want to be part of such a weird fetish and Jake would make her live in it if he thought she'd wear it once. Besides it had got a little uncomfortable. Kacey stood up and staggered slightly. She felt off balance and a little giddy. Her legs felt out of place, she guessed the suit wasn't for long term wear. She went to shrug the suit off but it remained fixed to her. Funny it seemed tight now, so tight, it was constricting her movement. she tried again to pull it from her, but it was hard wrok with her hooves. She tried to get her arms out but, it was so tight it was impossible. She looked herself over, oh "Nooooooooooooooo!"

It was impossible to tell where the suit ended and her skin began. The two were merged.

Kacey looked into the mirror and screamed, screwing her eyes shut she tried to shut out the sight of her pony ears.

She felt a beating on her butt. She twitched muscles in her butt and felt it respond. She looked back and saw
the suits tail move at her will.

The wet feeling in the suit had gone, instead, all she could feel against her skin was hair. Pony hair. Her own hair was darkening slowly and its look was changing. it's very texture becoming mane like.
Kacey beat at herself in frustration. Twisting this way and that in frustration and terror. She fell to the floor, and tried to pick herself up. Failed. She looked back at her legs. She saw nothing human. Instead all that greeted her gaze was the hindquarters of a pony. A pain shot through her arms. They began to twist into crazily impossible angles, her skin, the suits skin? Their - her skin was forcing her bones into new shapes.
Now her arms were front quarters. She pushed herself along the carpet, her movement clumsy. She fell back, panting heavily. Then she saw her breasts, their skin was growing hair and they, they were shrinking away............ along with her humanity.

Kacey tried to scream but all that emerged was, "Breeeeeeeeeeeeeeeeheeeeeeeeeeee!" Her neck was reforming about her, but her throat was stunted and coarse, unpliable. Basic.
Blllllllaaaaaaaaaaaaaaarrrrrrrtttt. The sound filled the air with a stench, the smell of a fart. The heady, sickly aroma filled the air, goading her as she lay there, being pulled into her new form.
The front door opened, it was Jake. He looked over and saw Kacey lying there, whimpering, mouthing, Help Me, to him.

"Help you?" he asked sarcastically. "Kacey I am setting you up for pleasures you never knew existed." He
pulled his pants down about him.

Kacey was on fire, her nostrils burned with the smell of him, she rolled her eyes and tossed her head, lost in
lust. Her fanny was weeping and wet. It felt sticky as it ran into her pony hair.

Jake went to her, and his penis became engorged. 10 inches, out like a lance. He ran his hand over her face and wiped tears fom her eyes. then he came to her behind and took position.

Kaceys body betrayed her, she forced herself backward onto him, meeting his thrusts. his chest lay against her fur as he straddled her, pushing hard. She pushed back, the orgasms rolling through her.

Jake felt her warmness against him and the slickness within, Kacey had always been a good lay and now she was even better. He grunted as he fired into her massive cunt laying her seed.

Kacey fell back screaming inside, her belly on fire. It rose about her, it grew and changed shape. She felt movement within herself. Young. Unborn. Pregnant.

Jake picked up the mask, it lay on the floor. Kacey pulled away at the sight of it. She wanted to at least keep her face. But no, no it was not to be. The sticky sweet smell of the mask, came up to her face. She could see the innards of it. It was blank inside, ready to force her skull about it. She let out an animal squeal of terror as he placed it upon her.

Kacey rolled about trying to get the mask off, but it wouldn't come away. She tried to nudge it off but all that happened was that it continued to grow tighter. No, not grow tighter, her face was changing, her skull reforming to fit it. She realised with horror that she wouldn't like to see her face maskless now, it would be deformed and skinless. The mask burned into position, it, was her skin now, her face. Kacey gave a snort and felt her new nostrils move. She opened her mouth wide revealing a big brown tongue that ran past large bulky teeth.

Her vision disappeared, reappeared without focus. Her human blue eyes replaced by the ponies brown.

Her body and torso grew in size, along with her neck, fast growing more hair now, a thick black coat.

Jake grinned at her and she saw his blurred face laugh as the last human thought crossed her mind.

How could she have been so stupid?