Hearing Diana scream, Tina went to investigate. She was shocked to see this ridiculously well built woman on the floor rubbing her hands all over her body. She was even more shocked to recognize this person's face as her sisters.
"Diana!" said Tina loudly, "Stop that Diana you're acting like a stupid bimbo!" With that Diana stopped and looked at Tina with a look of dimwitted recognition.
"Stupid," asked Diana carefully uttering every syllable. "Diana Stupid?"
"Yes!" yelled Tina angrily, "now get up off of the floor and pull your-self together!" Slowly Diana did what she was told and walked towards her in a gloomy humiliated manner.
"Good," said Tina Sternly. "Now get some clothes on you moron!"
"Diana not moron," responded Diana just before grabbing Tina, "you Moron!" With those words Diana latched onto Tina's surprised open mouth and began to hungrily inhale as she explored the insides of Tina's mouth with her tongue.
Tina was furious and scared but remained trapped by Diana's embrace; it was if her entire body was paralyzed. Than the sisters felt something strange begin to happen.
Tina could feel her entire body throb and stretch as she slowly grew taller and Dina felt the weight on her back begin to ease and her breasts slowly began to shrink. Soon the two were the same height, but Tina's change didn't stop there. Her hair had been growing steadily all the time and as Diana's chest shrank, Tina's grew proportionately. And it wasn't just Diana's chest that changing, all the recent changes she had recently undergone were reversing, seemingly being transferred into Tina.
Tina's mind was numb, at first when all this started happening she was terrified and her mind was running a thousand miles per hour. But then her mind dulled as if the intelligence was being sucked out of her body, and in a daze she began to return the affections of Diana's tongue with delight.
As if coming out of a daze Diana came to her senses and quickly pulled Tina off of her.
"I'm so sorry!" said Tina apologetically to the vacant looking Tina. "I wasn't thinking and I saw you and I just..." Diana stopped and looked at her sister with shock as what she had done became abundantly clear. Not only were they the same height now, but Tina's formally baggy shirt and shorts had become skin tight, nearly transparent in some places. Tina's body had grown and twisted itself into a perverted caricature of a woman, almost exactly how Diana was a moment ago. The only difference was that Tina's hair wasn't blond and her face was slightly different; a quick inspection told Diana that indeed her own hair was still blond.
"More!" demanded Tina happily in a matter befitting a four year old girl. "Want More!"
"I'm sorry Tina," said Diana in horror. "I am so sorry!" Tina didn't pay any attention to her sisters' apologies. She was already busy rubbing her breasts through her T-shirt experimentally.
"MMmmmmm feels so good," mumbled Tina with a smile.