Dylan felt a tingling surge through his whole body.
'Please, No!' he cried.
Karen laughed. 'Dont be such a baby!' she said, 'Unless you actually DO want to be a baby?'
Dylan stood up, already looking up at his younger sister.
He was at least a head shorter than her now.
He felt his breasts deflate leaving him with a flat chest again as he regressed backwards through puberty, his vagina tightening.
He shrank down smaller and smaller. Suddenly his sister seemed VERY big!
His hair lightened and lengthened, he gained a cute little button nose and cupid bow lips.
'I'm so widdle' Dylan gasped, amazed at the little girl voice he now had.
'And adorable.' Karen said as freckles appeared on the new little girls face.
'I guess those panties are new' she said, recognising that Dylan wasnt his little cousin but what Dylan would have looked like had he been born a girl.
'Put those panties on lil sis,' she said 'we cant have you running round naked' as she fixed his hair into bunches.
Dylan had never felt so helpless. He was now a six year old girl, at the mercy of his big sister.