For one reason or another Jeff's girlfriend lived next door, and with the upgrade to the chronivac he had a perfect view to see what Jessica was up to and change her and the people around her... and even more perfect Jeff could mess with her by making her the only aware person in the house... and viewing her Jeff saw that Jessica was... in the shower Jeff could see her nice curvy body. Decently sized C-cups, wide hips... Jeff was a lucky guy. However this could be fun to mess with her in the shower. As Jessica was starting to lather up with some body wash Jeff decided to make it easier for her to clean her chest by setting them to AA-cups. As her hands passed over her newly flattened chest... she noticed that her hands just glided over it.
"What the?" Jessica thought more confused out than spooked. She washed off the soap and saw her chest was as flat as when she was 12. Then her chest surged to Z-cups lurching Jessica forwards as her lovely bits were starting to be groped all over by gravity. "...I don't think... this is how puberty works..." Jessica stopped showering, and getting out of the shower she noticed that the underwear and shirt she left out was different. Like they were made for her new giant bozzongas. After drying off her body she found it odd how her muscle memory was just fine with the Z-cups. Going downstairs she saw her 9 year old little sister and her mother. Her sister's chest had the slightest bulge to it, but Jessica didn't notice as her mother's new breasts were bigger than Jessica's. "...What is going on? Neither seem to be panicking or anything." Jessica thought.
her little sister asked "Hi Jessica, what's up?"