Sister comes home alt

It didn't take long for my sister to get back from work. Sam worked as a barista at some cat themed coffee shop. She was fairly good looking with brown hair and A cup tits. I wanted to test out the wishes while someone was also in the room.

Sam was wearing her work clothes (navy polo, black cat-eared headband, blue jeans, a black cat tail, and black sneakers). I thought 'I wish Sam was one of the rare (1 in 137) humans born with animal features, in this case a black cat.' This time the magic just seemed to move her ears up to the top of her head and merge them into her cat-eared headband, then flow downward changing her hair color to black until it met the tail that already seemed to be twitching; all this happened without any notification. Sam didn't seem to notice. I then thought, 'I wish Sam was wearing a black ribbon collar with a bell attached.'

"Hey Sam. That's a nice collar, is it new?" I asked her.

"What this? No, it's part of the uniform. I just forgot to leave it at work," she responded.

Hmmm, interesting, I thought about my wish. Perhaps thinking 'was' made it retroactive? I needed another test.

'I wish Sam's shoes will transform into sexy black stilettos,' you think. Immediately they changed. Sam almost lost balance and grabbed the arm of one of the new arm chairs. "What the hell! My shoes!" she yelled as she looked down. Gone where the boring black slip-ons and in their place where the new sexy stilettos I was imagining.

"Wow!" was all I could say. "I didn't know they let you wear them to work! They look good on you." I told her.

"Huh! These aren't mine. I was wearing black sneakers just a moment ago! Nyah!" she said in awe.

This was interesting. If I phrased the wish right it would either change the past it seemed or would just have an immediate effect. I'd need to be careful how I worded them and my thoughts also seemed to guide the changes as the heels looked like what I was thinking of when I made the mental wish. It kind of made sense though as the genie did say if I thought "I wish" then it would happen.

'I wish Sam's jeans and tshirt will transform into a sexy red and white silk mini dress maid uniform modeled after maid Ichigo from Tyokyo M*w M*w.' I thought. Suddenly Sam's old jeans and tshirt where replaced with a shortened red and white maid uniform with a pink bow replacing the collar. A huge white bow appeared behind her seemingly just above the still black tail. The stilettos I had wished for previously disappeared back into black sneakers, only now, with a pink heart on the toungue and pink laces.

Sam dropped a few inches which made her look down at her self in utter confusion. "What. Nyah? Why am i wearing this?" she said in total confusion.

"Isn't that what you usually wear to work?" you ask her.

"No! My uniform should be a polo and jeans! NYAH!" She almost yelled in fear. "I need to make a call," she says as she ran to her room.

...

A little later, she returns looking like the world just inverted it's colors. "So, apparently, the Manager and owner just had a meeting to change the cafe into a full maid cafe, nyah," she explained forlornley. "They just made the decision and then my uniform changed, nyah. It was supposed to come in next week, but now I will be advertising it in advance." She looked so sad that I had to find a way to cheer her up.

Interesting, the wish for transforming her uniform made the cafe that wasn't thinking directly about change as well.

'I wish Sam would act like the family's maid when she's at home and she gets aroused and happy doing things for us.' I thought. Sam went to the kitchen and brought me a soda and placed it carefully on the coffee table next to the sofa. I never meant she would be the only one to benefit. 'I wish that over the next week, Sam would grow to love serving others so much it shows as her bust size increases without strain to her (no need for her to complain). I also wish that her uniform would self alter as her chest grows.'

So far so good. "Do you need anything else, Sir nyah?" she asked. Her chest noticably starts to grow a little as she smiles warmly.

"No thank you Sam. You may do as you wish." you smile as you tell her. You watch as she smiles and a slight quiver in her smile indicates a mini orgasm. Sam turns around and goes back into the kitchen to start cleaning and preparing dinner, her tail waving a little as she worked.

This was a fair bit to take in and you really did want to do some more testing. After all testing revealed the retroactive changes that seem to have been made from your past tense wording. Also you now know that another wish can either change or alter a previous one and that a wish can go further than originally thought.