Sisters by chance

Childhood

They orbed back into the downstairs of the manor. Phoebe ran over to Prue and hugged her.
"What's up Pheebs?" Prue asked with a smirk. When Phoebe was little she'd do this little routine when she wanted something.
Phoebe smiled
"Prue the bestest sister in the entire world. Can Paige please spend the night? I want to have a sleepover."
Prue laughed at Phoebe's childlike behavior.
"Of course she can." She answered.
Phoebe grabbed Paige's hand and pulled her upstairs.
Piper sighed and staring rubbing her forehead.
"Prue! They are going to act like children all night!" She said staring into her sisters soul.
Prue smiled at her little sister.
"I'll help watch them." She said before pulling Piper into the kitchen.

Upstairs in Phoebes room
"Paige I wish we grew up together."
Paige hugged Phoebe
"Me too." She slurred
Phoebe came up with an idea.
"Let's cast a spell to see what it would be like!" Phoebe suggested.
"Wait won't Piper and Prue be mad?" Paige asked
Phoebe shrugged not caring of the consequences.
"They'll probably think a demon did it." She said.
Paige nodded
"Let's do it." Paige agreed.
They stumbled upstairs to the book.
Both clearly to drunk to think and got a piece of paper and pen.
"The two of us have different pasts. We're brought together by our craft. We call upon the ancient power. To guide us on our vision path. Let us see what could've been. Let our hearts desires win."
All of a sudden both of them switched clothes. And both of them had bangs.
They stood up and looked in the mirror. Both of them still drunk and now teenagers.
"Damn we look hot!" Paige said.
The two of them jumped up and down giggling before returning to Phoebes room.

Prue and Piper were in the living room and could hear Phoebe and Paige giggling. Piper snuggled into Prue.
"It's peaceful around here for once." Piper said to her older sister.
"I know I'm enjoying every second of it." Prue said.
Leo came walking downstairs smelling his shirt and making a confused face. The older Halliwell sisters seen him.
"What's wrong?" Piper asked her husband
Leo looked at her.
"I keep smelling cigarettes. I don't know if it's on my clothes from the club."
Prue got up and went to smell his shirt.
"I don't smell it on you." She sniffed the air
"But I do smell it upstairs!" She added before marching up the stairs. Piper hopped up and followed her and Leo not far behind.

They walked towards Phoebes room where the smoke was coming from and tried to open the door but it was locked. Prue used her powers and the door flung open to reveal a teenage Phoebe and Paige both holding cigarettes.
They looked at each other.
"What the hell happened to you two?! Why are you smoking in the house?" Prue yelled.
"Why are you yelling in the house? And it's none of your business." Phoebe answered with a laugh from Paige.
Prue looked at the two of them who continued smoking like she wasn't there.
She walked towards the window and opened it before snatching the cigarettes from them and throwing them out the window. Paige took out the pack and took two more out. She handed Phoebe one and she took the other. Phoebe took the lighter and lit them. Prue looked at Piper who was speechless.
With the wave of a hand Prue threw them out again earning annoyed looks from the younger two.
Piper finally spoke up.
"What the hell happened to you guys? Why are you teenagers?"
Phoebe looked at Piper like she had seen a ghost.
"Oh my god! Piper your pregnant! Wait when did you lose your virginity?" She asked.
Pipers face was turning red. She looked at Prue before facing the teenagers again.
"Just answer my question. Why are you teenagers?"
Paige huffed in disbelief.
"Piper did you skip health class? Puberty." she replied.
"Ugh Paige not you too." Piper said praying this was a joke.
Prue decided to take the lead
"Wait how old are you again?"
"I'm 17! Geez you can't even remember?" Phoebe said.
"What about you?" Prue asked Paige.
"15" Paige said.
Prue looked at Piper worried.
Phoebe was starting to get irritated with everyone invading her personal space.
"Will you guys get the fuck out of our room?" Phoebe whined.
Prue was shocked at what her sister just said not the bad language. Phoebe always cursed.
"Our" room. They think they share a room.
"No we won't. Why are you smoking in the house?"
Paige was the one yelling this times
"Grams! Grams!"
"Grams isn't here!" Prue said
To her surprise Grams walked in
"What's wrong?" She asked
"They won't get out of our room!" Paige said
Grams stayed in the doorway
"They probably just want to spend time with the two of you. You guys are always so busy with your friends after school. They never get to see you anymore." Grams said.
Prue and Piper were super confused. Prue looked over at Piper and seen she had turned back into her teenage self. She then caught a glimpse of herself in the window reflection to see she had been returned to her teen self too.
"Piper can I talk to you?" Prue asked.

The two of them went into the hallway.
"We are all teenagers again!" Prue whispered .
Piper looked back into the room.
"This must been what it would have been like if Paige was raised with us." Piper said.
Prue nodded. She looked down at Pipers belly.
"Your not Pregnant anymore."
Piper laughed.
"Good. Grams would have kicked my ass if I was." Piper said imagining Grams reaction.
Prue smiled too.
"We didn't switch until Grams showed up." Prue said fixing her hair in the mirror.
Piper smiled at her Grams who walked past them to go back downstairs.
"Probably because the only time we felt like children was when she was alive." Piper said sadly.
"That must mean all of our old high school friends are teenagers too in this reality." Prue said looking at the picture of Piper, Andy and herself hanging up on the wall.
Piper smiled at Prue.
"Go see Andy. I know you want to." Piper said.
"Thanks sis. Cover for me?" Prue asked.
Piper nodded and Prue kissed her forehead before skipping to her room.
Piper walked back towards Phoebes room to see the window open and Both Phoebe and Paige were gone.