James to Becky

"No way!" James said dropping the medallion on the kitchen counter not wanting to even touch it.
"Please Uncle James, you have to." Becky said whining in James' voice. "You know how crazy over-protective she is. If she doesn't hear from me with in an hour, she'll probably come home early from her vacation and find out that her daughter now looks exactly like her brother."
"I know that " James started to say knowing his sister's over protectiveness of Becky. He was even surprised that she had agreed to let her stay with him, instead of dragging her off on the trip with her, but Becky had to many things going on with school to make that possible.
"And you know that is she finds out that this happen that she will hold you responsible for this happening to me and "
"Alright!" James said picking up the medallion and putting it on. "I'll do this, but we switch back first thing in the morning."
"Deal!"
They walked into the bedroom and Beaky picked up her cheerleading sweeter. "Here, this was the last thing I was wearing."
James hesitated for a moment and then touched the sweeter to the medallion. He felt an electric shock tingle though his body and he trembled with fearful anticipation.
"Oh my Gawd." Becky said. "It's working, you're shrinking."
James had been looking eye to eye with his duplicate, but could now see that his double seemed to slowly be getting larger, but James knew that he was really getting smaller.
"I have to see this." James voice cracked. He walked into the bathroom followed by his Niece Becky. James looked in the mirror and saw that his hair had already started lightening to blond and was growing out. His face had already started changing too. He and his Niece had a family resemblance, but now he looked less like himself and more like her. His body had continued to shrink and his clothes were now ridiculously to large. His arms had lost all their hair and his hands now looked delicate and well manicured. His long silky blond hair now fell below his shoulders and he now had Becky's pouty lips and cute button nose. He felt his chest beginning to swell and looked down to see Becky's breast expanding his now baggy shirt outward.
"Oh my Gawd." James said sounding almost exactly like his Niece. "This is so weird."
"You're telling me." Becky said looking down at her old body.
James felt his hips shifting and the shriveling of his manhood. He would have looked, but with his Niece there didn't feel is would have been appropriate. Soon the last of the changes were complete and James stared in the mirror at Becky's reflection. Becky in his body stood next to him and put her arms around him giving him a hug.
"Thanks 'Becky'! You're the best Uncle a girl could ask for." Becky said playfully.
"No problem, what are Uncle's for? Or am I the Niece now?" James said with a laugh. "We should probably both get changed into something else?" Becky said looking at how both of them were dressed.
"Good idea. Let's both get changed and then we'll wait for your Mother to call." James said.
"You're Mother." Becky corrected.
"Now that is really to weird." James said heading off towards Becky's room to find something to wear, while Becky head into James room.