Erika was walking nude in another person's body when she started to feel dizzy.
Her heart started to race and her skin started to feel tighter. Her limbs felt like rubber.
Her ass deflated like a bullet going through a tire.
Her wide hips shrunk like an onion being filmed as the layers were stripped off, then the video fast forwarded.
Erika's legs were becoming shorter and narrower.
She lost 3 inches in a heartbeat.
Erika's hair changed from black to blond as her nails became shorter.
Her breasts shrunk from C cup to B then to A and finally she was flat chested.
Baby fat came back onto her sister's toned body.
"No I want to go back!" she cried
It wasn't her sister's husky, sultry tone of the nearly adult Nancy was now the wine of a child.
She desperately fished them over, she started to put her legs through the holes in the fabric. As her feet entered the fabric they instantly became what they were before. She pulled the panties up further and her legs instantly became Nancy's. Her ass and pussy returned to what they had been before. She scrambled for the bra and her chest expanded with her tits grew like water balloons hooked up to a fire hose. Quickly regaining what she had lost. Her bra wasn't even back in place as her tits wobbled and jiggled unconstrained by a bra.
Her face and hair quickly returned to what she had expected.
Erika heart rate slowed and she played with her tits letting them bounce up and down. Pinching her nipples with hands returned to adult ones with long nails that were yet to be painted. Her thick, juicy hips were returned to normal.
So her being Nancy was linked to her wearing her big sister's underwear and wearing it. If she wore it longer would she be Nancy longer without it on or did she need to keep them on? What about if she used the salve on clothing and not just underwear? Would it work on her mom's clothing or Nathan's clothing? Could she be any of them or any set of clothes.