Fireworks flew across the night sky, bathing Fiona’s apartment in flashes of brilliant light, the sounds of explosions drowning out the cheers of people outside counting in the new year. Inside, Fiona trudged her way to the kitchen. She was glad to see the old year gone, but it didn’t really seem right to be out celebrating. Still, at least this way she could stay in her pyjamas. Pouring herself a glass of milk, she glanced at the expiry date: END DEC 2020.

       “Probably fine…” she mumbled to herself, drinking the milk down and making a mental note to buy more in the morning.

       Fiona made her way back to her living room, her stomach gurgling a little as the milk settled inside her, a fuzzy sort of bloated feeling. Sitting down in front of the TV, she tried not to pay any attention to her insides, flicking through the channels for anything fun to watch. A dozen channels in, her stomach gurgled again, the bloated feeling only increasing.

       “Maybe I should’ve paid attention to the label,” Fiona nursed her stomach, rubbing her hand against it, trying to tell if she was imagining how soft and squishy it felt. Another gurgle, and she felt her stomach swelling out under her pyjamas, fingers sinking slightly into a soft layer of fat. Pulling up her top, she could see it swelling more, a smooth curve to her belly, her skin soft and slightly pink. “Must be imagining things,” she tried to reassure herself, pulling her pyjamas back down with a huff, returning her focus the to TV.

       For a while, her stomach remained still and silent, and Fiona had almost forgotten the glass of milk until she felt a strange pain underneath her, something pressing into the small of her back. Turning over slightly, her swelling stomach shifted, the growing weight of it suddenly apparent. Reaching underneath her, she tried to find whatever she was sitting on, her fingers catching against something long and almost furry. Tugging on it, she yelped as a sharp pain flashed up her spine, realising whatever it was must be attached to her.

       Nervously, she rolled onto her side, resting one hand on the soft bulk of her belly while trying to look behind her. There, flicking about was a short tail: black and white with a tuft of hair at the end, unmistakably a cow’s. Not quite believing what she was seeing, she carefully ran her fingers along it. She could feel the warmth of it, the shifting muscles inside, her fingers reaching up to the point where it reached her back, pushing against her waistband, feeling the smooth hairs spreading over her rear.

       “This can’t be real,” slowly standing, trying to get a better look at her tail swishing behind her, she felt the soft flesh of her belly shifting again. It bulged against her pyjamas, the stretching fabric supporting the round bulge of it now pressing out of her. Every time Fiona moved, she could feel it shifting against the fabric, sensitive skin brushing against the soft fibres, “this can’t be real…”

       Walking to the bathroom, desperate to see herself in the mirror, she found herself increasingly conscious of the growing weight of her body. More of her was starting to swell, her ass and hips swelling outwards, threatening to tear her pyjamas, the waistband cutting into increasingly soft flesh. Through her body, she could feel a dull ache in her bones, shifting and adapting to the shape and weight of her changing form. Her heart was pounding in her chest, a warm tingle spreading across her body, an unseen wave of black and white starting to cover her skin as Fiona continued to change.

       A few steps down the hall, she started to stumble, feet feeling numb and clumsy beneath her. Steadying herself against a wall, she looked down at her transforming feet as smooth hairs slowly covered them in black and white. Toes started to swell and merge together, nails growing thick and black, feet stretching upwards as they became bovine hooves, digging into the carpet. Eyes wide with alarm, she took a step or two forward, trying to adjust to her changing legs. It felt almost like walking on tiptoes, powerful muscles in her transformed thighs supporting her body, her rear (and tail) pushed out behind her.  

       “Okay, okay, I can do this…” calming herself, she took a few more steps forward, inching her way closer to the mirror and figuring out how far her body was changing. She could feel her chest heaving, breasts rising and falling under her top with each deep breath she took. She could feel them now, growing like her belly had, the soft and heavy flesh pushing out against the fabric of her top. Risking a glance down, she could barely see her new hooves past her rising chest, the shape of her thick nipples clear under the straining fabric.

       Cursing under her breath, she reached for the bathroom light, numb and clumsy fingers almost missing the switch. Blinking in the harsh glare, she looked down at her hands, watching her fingers pull together in pairs into thick and powerful digits, covered with the same white and black pattern as her legs. To her relief, the stopped changing after her nails grew into thick almost-hooves, the shape of her hands still mostly human.

       Looking away from her hands, she braced herself for the sight of her reflection. The person staring back was almost unrecognisable, her whole body thick and curvy from new fat and powerful muscles. Across the bare skin of her arms and feet, she could see the black and white pattern of a Holstein cow, the same pattern already starting to reach up her neck, growing thick with muscle to support a heavier head. Already she could feel a dull ache in her skull, a strange sensation of pressure as her nose started to push out from her face.

       It grew wide and black, nostrils growing white with snorting breaths, jaw and teeth aching as they pushed out. Her vision shifted slightly as her head continued to change, becoming a mix of bovine and human, eyes angling slightly out to her sides. Carefully, she reached up to feel her changing face, the shape of her skull, the smooth shape of her nose. Her tongue grew thick and wide in her mouth, lying across the wide and blunt teeth in her changing jaw. Gradually, the changes slowed, the last touch her rising ears. The shifted up growing broad and flat, flicking amongst her hair, shifting to a deep black to match the rest of her bovine skin.

       “I’m a cow,” Fiona gasped, unable to deny what she was seeing, the sensations of her new body, “a fucking sexy cow…” Even her voice had shifted, smooth and lowing, matching her new self perfectly. Her hands shifted over her body, feeling the smooth fat and thick muscle beneath, every part of her feeling so sturdy. Well, almost every part of her.

       Her attention turned back to the undeniable bulges down her front, the weight of her swollen breasts and belly hanging heavy on her torso. Tentatively, she pulled her top upwards again, freeing the newly-grown udder now hanging free from her belly. A hand brushed across the sensitive, pink flesh of her udder, fingers finding a thick teat, her heart skipping at the sudden feeling of pleasure.

       “Ow, oh wow…” breathing heavily, Fiona gingerly lifted her top up higher, freeing her breasts: soft and pink, nipples swollen and heavy, they seemed the perfect match to her new udder. Gripping a breast with one hand, her udder with another, she slowly massaged the warm flesh. Her heart beat faster and faster in her chest, legs quivering beneath her, the sudden yearning in her breasts drowning out any other thought. Lost in the sensations, she tugged on thick teats, powerful fingers gripping and pulling until jets of milk splashed against her mirror. The sensation was blissful and overwhelming, Fiona unable to stop herself letting out a moo of delight, echoing through her apartment.

       When Fiona finally returned to her senses, her body was still quivering with pleasure, milk matting her new fur, the soft flesh of her body still tingling under her touch.

       “Well, at least I won’t have to worry about buying any milk…”