“I think I would want to try and transform my butt cheeks into breasts without nipples,” She honestly told Joe. “I mean that I can have them but no one would be able to see them at first glance.”
Joe nodded in understanding, “I guess I can see your thought process.”
“So can we start?” Sarah asked.
Joe nodded and then told his twin. “Can you turn around then?” Joe asked. “I need to be able to add them.”
Sarah nodded and turned around to show off her large tail breast. Then she slipped off her shorts and underwear.
Joe then walked over to his sister and used the Black Breastinator and took aim at his sister left butt cheek. Taking only a few minutes her butt cheek grew a red nipple. Not wasting any time Joe aimed at her other butt cheek to transform it into a breast. “Halfway done.”
“Keep going! This feels great!” Sarah smiled. “Can you make them full with milk?”
Joe nodded as he switched out for the Red Breastinator. “How big?”
“Large beach balls.”
“That large?” Joe watched Sarah nodded her head. Joe went through the setting and then hit each of her butt cheeks to remove the nipple. Joe then pulled the trigger to make them grow out far. Soon they got to the size of soccer balls. As they grew they started to jiggle about and bounce.
“Keep going!” Sarah edged her twin on. Joe only nodded till they finally her hidden butt breasts to hit beach balls. Joe let go of the trigger. “PERFECT!” Sarah giggled as she rounded her butt cheeks. “Can you fill them out now?”
“Sure,” Joe nodded as he set the Red Breastinator settings and pulled the triggers. After a few zaps he filled her hidden breast butt with milk. “Happy?”
Sarah nodded and turned around to smile at her brother. “Hell yes!”
“Now what?” Joe asked his sister.