?Solution

Jon woke up the next day, and was promptly reminded of his situation since he didn't have his morning wood.
He got up and swayed down the hall to the bathroom. He pulled down his pants to sit down and decided he was going to try again. He closed his eyes and thought about having a penis, and could feel his groin moving. He keep thinking about it, and looked down. It was like his skin was mercury, flowing into the shape of a penis. He peed standing up, with a sense of accomplishment. He shook it off, and went to brush his teeth. He felt his groin moving while he was brushing his teeth. His penis was getting smaller. Looking at his penis, he stopped brushing his teeth and focused on having a penis again,this time 9 inches. His skin complied, but by they time he finish with his teeth it was back to 4 inches.
"So that's how it works, I guess it's better than nothing," thought Jon
Jon put his pants back on and went to his room. It was supposed to be warm that day, so he put on a pair of basketball shorts on his bed and grabbed a pair of boxers. They ended up being pajama shorts. He then put the shorts on. He went to the mirror and felt like his butt was still a little large. He grabbed his wallet and the rock before going to have breakfast, having a bowl of cereal by himself like usual on the weekend. Most of the family slept in on weekends, except for Jon and Mikey. Mikey was already couch-deep in Saturday morning cartoons.
Jon walked to Karyn's house and realized that he didn't wish for her cloths to fit.
"I wish Karyn's clothing will stay the same fashion, but will now and always change size to fit her" Jon thought that was safe, since she may change back one day. Zoe woke up to a wish in her mind. She was tired and since it was about Karyn she thought "Granted." and rolled back over.
Jon rang the doorbell and Karyn's mom answered the door in her PJs.
"Come in Jon, Karyn is almost ready."
"Thanks Mrs Black."
Jon always thought Mrs Black was pretty, but she was a bombshell now. It looked like her breasts were bigger and her ass seemed a bit wider. Her blonde hair, while a bit messy, was a change from her prior red. He felt some tingling in his vagina, and was brought back to reality as they came into the kitchen
"Can I get you a bite?"
"No thanks, I already ate."
"Well, take a seat, Karyn'll be down in a minute."
Jon watched as Karyn's mom walked around the corner. He didn't sit down, since he didn't want the reminder of his butt. A few minutes later, Karyn came down. She was her usual tomboy self, but with blond hair in pigtails and a slightly... larger... shirt
"I thought you had forgotten about me last night, which I guess you did. Thanks for taking care of it this morning." Karyn said as she reached for where the cereal bars were kept in the kitchen
"Glad I could help. Sorry about doing it a bit late. By the way, I think your mom was affected by your wish"
"Yea, she's a blond too. Her figure is a bit more...curvy. I guess that's where I now get it from. But get this, she is now a VP at her job. Another weird bit is that we have more exercise equipment in the house and my DAD is even using it. We exercise more as a family. I even have the urge to use the running machine we have in the basement. I did it last night."
"These wishes really have a domino effect. My wish gave me all girl pants at home. I even have some girl underwear."
"With great power and all that Peter Parker."
"That's why we are here, so we can figure it out. Ready to go to our mind palace?"
The duo walked out to the back and went to the treehouse they have been using for years. They went back and forth about both of their issues for about an hour or two, making sure the rock was in a place neither of them was touching. Jon told Karyn what patterns he noticed when it came to his issues. They finalized what they wanted for each of them. By this time Zoe was up and having breakfast. Karyn wished first
"I wish I could change my hair color to any color, style and length I want and it will stay that way until I write down a new length, color and style. I wish that any changes to my hair will not affect anyone but me, but I will have the equipment in my room to take care of whatever hair I have."
Zoe thought "Granted" She liked Karyn.
Karyn took out a pad of paper and wrote down red, pixie cut hair, and her hair immediately changed to a red pixie cut. She then wrote pink mohawk, and it became a pink mohawk. Finally, she wrote red, shoulder length braided pigtails.
"Great, that takes care of the hair. Now,onto the other matter. I wish my breasts would fit whatever size bra I put on and would stay that way until I use a different sized bra. I wish that any changes to my breasts would not affect anyone else. I wish I had a bra of each cup and underbust from A to DD and 32 to 40. I wish that whatever size breasts I have, there are always 6 bras of various styles in my drawer."
Zoe thought about it..."Granted."
"I will have to test that one later."
"My turn," said Jon,
"I wish that Jon had guy pants at home." Zoe: Granted, giving him half guy pants.
"I wish Jon had guy underwear at home." Zoe: Granted, add boxers to his underwear drawer
"I wish that Jon's girl butt was like a 12 year old girl's butt," Zoe: granted, but Jon's lower half will rapidly go through girl puberty. Jon's hips shrank visibly, but so did the muscles on his legs.
"I wish that Jon's penis..." and Karyn just started laughing