Jeff excused himself to his room with the chronivac remote. With the test on his sister completed he was curious about what he could do himself. He stripped down to his boxers and then grabbed his remote and looked at the stats he could change. He thought "Well let's go change my gender and see how that feels." He pressed a button on the chronivac and the M letter displaying his gender turned to an F. Jeff didn't feel anything then thought out loud "Well that was anti-climatic." then shut up as she realized her voice was higher pitch. She looked to her hand and it looked more slender and delicate. As were her arms and then she looked to her chest and found some perky breasts which looking to the chronivac were B-cups. Jeff thought to herself "What the fuck? My 10 year old sister has double d's and i'm here with b cups?" Quickly remedying this she made her boobs E-cups and then watched as her boobs gained a couple of cup sizes in an instant. They had a nice weight and Jeff found they were somewhat sensitive to squish around. She then looked back to her clothes and found instead of her short and T-shirt was a Bra along with a blouse and a skirt. Curious she looked to her lower half and found some nice skinny legs, some nice hips, a lack of a penis, and some panties. Jeff really not interested in learning how to put on girl clothes turned himself back into a guy. Reality around him warped back to normal. Nice flat chest and looking back he saw his bulge... was a bit bigger than he remembered. Experimenting a bit longer he set his dick to 1 cm long Then turned himself female again after clothing himself. Returning to the other gender he found that her chest was really flat. Jeff thought to herself "Alright... So dick size and breast size are affect each other... regardless let's see how F-cups feel." Then materialized bigger breasts than she had before. Going back to where Jamie was the rest of her body still felt less mature than hers. She sighed and thought to herself "Well i'm going to be more mature than her one way or another." then aged herself to 32. She grew a little taller, her hips and butt grew a little larger, and her breasts grew to J-cups and her blouse and skirt just changed to a blue sleeveless dress. Looking to the device she was now a sexy woman. Then it scanned someone new and saw that it was her mother. Quickly thinking Jeff...