You switched positions on your bed, getting closer to the television that your game console was hooked up to. You booted it up, putting in an RPG that you really liked, and booted into the character that you'd been working on. You always felt a little guilty playing these games, because you liked to play as a girl. You liked being able to look at your character, and role play out some of your kinkier fetishes. 
The game finished loading, revealing, in your opinion, a very sexy girl with a cat tail and ears. She was wearing almost no clothes, revealing her lithe body as you found yourself growing moist. It didn't take long for you to resume your normal habit of running around and role playing her as a slut, and soon you found yourself growing more and more aroused. Now that you were a girl, you found it a bit easier to imagine that she was you which made the experience even more enjoyable. 
Finally, after several hours of play, and several orgasms, you turned off the system as your mother called you down for dinner. There was little talking at the table that evening as everyone enjoyed large portions of your mother's famous lasagna. That was the one meal that never had any leftovers, and everyone always felt heavier afterwards. Though, Rose seemed to be especially hungry tonight as she shoveled down at least four plates of food. Though you weren't far behind with three whole plates of food. 
Afterwards, everyone went their separate ways as your mother cleaned up the dishes. You made your way to your room, shutting the door behind you as you plopped down on your bed, adjusting your waistband so it wouldn't cut into you as much with your stuffed belly. 
You closed your eyes, as you started fingering yourself again, the vision of your character filling your mind's eye. You had always been fascinated with anthro girls, often wishing that they were real. They just seemed to be the perfect blend of everything. Beautiful girl with a sexy cat tail, or wolf ears, or.... You tensed slightly as an orgasm ripped through your body, a wave of pleasure fueled by the unbridled bounds of your imagination. Your heart sank slightly as it always did when the fact that they didn't exist entered your mind. You loved games that gave you the option to play as them since you'd always secretly wished that you could be one. 
Faintly, you were aware of footsteps approaching your bed as you opened your eyes groggily, turning towards the source. The girl from the night before was approaching your bed, however, there was something different about her. As she walked, you were aware of a black tail swishing around behind her, looking much like a cat's. Through her long hair you could faintly make out the tips of black cat ears twitching slightly at the quiet sounds of the night. Her eyes were a beautiful golden color, with black slits for pupils.
Your heart beat fast as the young girl stopped beside your bed, your groin growing moist at how perfectly her catlike features enhanced an already cute face. You didn't even resist as she reached a hand out towards you, placing it on your head. 
A warmth washed over you as you found yourself growing more tired with each passing moment. Her hand knew how to relax every knot of tension out of your scalp as your eyes grew heavy, and you sunk deeper into your bed. 
You awoke some time later, morning light streaming in through your window as you stretched. One good thing about this curse was how well you slept. You rolled onto your back, almost letting out a yelp as you felt a pain in your backside. You jumped to your feet, looking for the source of whatever had caused you the discomfort, but couldn't see anything out of the ordinary on your bed. 
You jumped as you caught movement out of the corner of your eye, turning quickly you almost screamed again. There, swishing back and forth behind you, was a black tail. Your eyes followed it as best you could, realizing that it was attached to your backside.
You grabbed it, and jumped slightly as you felt your hands close around the tail, which was surprisingly sensitive. You rushed towards the mirror in your room, trying to get a better view and stopped as you saw yourself. 
A cute pair of cat ears poked out of your longer hair, which perfectly framed your more feminine face. Though, that was hardly as surprising as the glistening cat eyes that peeked out of your face. You took in the rest of your body, noticing that you definitely were looking more feminine, and younger. Appearing to be close to Rose's age, with pert little breasts, and a very slightly chubby belly. Most people would still call you average, but there was definitely a tiny bit of a muffin top on you. A black tail poked out of a slit in your pajamas, that seemed like that was its main purpose. 
You starred at yourself, dumbstruck as you realized that you were a catgirl. And a rather cute one at that. But how would you hide this from people. There was no way that you could sneak this tail past anyone. Your hands went to your soft felt ears, as you closed your eyes at the pleasurable sensation of rubbing them. 
After a few moments, you couldn't resist the feeling to relieve yourself any longer and made your way out of your room, almost running into Rose coming out of the bathroom.
You stopped dead, as you did a double take at your slightly more chubby sister. A pair of wolf ears were protruding from her head, and she was straightening the hair on a bushy wolf's tail that protruded from her behind. 
"Watch it Kitty," She shot, revealing a mouthful of sharp teeth, as she walked into her room, slamming the door behind her. 
You stepped into the bathroom, relieving yourself at the toilet as you tried to figure out what was going on. Last night you had wished that you could be a catgirl, and now today you were a catgirl. On top of that, Rose was a wolfgirl, and she didn't seem to think it was weird at all that either of them now had animal parts. 
Did that mean that you could control what happened by what you thought and did? It definitely seemed likely given the circumstances, but you needed more information to be sure. Perhaps you could try to make another big change. Maybe you could try to get chubbier, after all you weren't exactly opposed to being fat. Though maybe you could try experimenting with something else about your body. The other option would be to wait until you meet with Sarah before you try anything else. Though overall, whatever you choose would have to be quick since you still had school today.