You think to yourself how would things be different if me and Tiffany were sisters.
You close your eyes and imagine yourself changing first your hair growing longer you start to feel your hair changing. Then you imagine your torso changing your shoulders drop and you feel as your chest starts to expand as you feel this you also imagine a bra forming which you feel next.Suddenly you know intenctivly that you have 32B's.
You follow the changes as you go down. You feel as you start to grow curves.As you reach down lower you imagine that you boxers are changing to panties and your penis and testical changing into a vagina and overies.
As you boxers grow smaller you feel them holding in less and less. You feel as your penis grows smaller and as your testicals are sucked into your skin. You feel as a tear opens sucking in your penis. You feel as the outer parts of your vagina form and as your testicals are sucked in. You feel as the move in your body to form overies you also feel as your new female reproductive system forms.
Soon you feel the changes stop. You finish as you imagine your legs change over.Finally you imagine that your pants were a skirt as you feel your pants are sucked up merge and pop out to form a skirt.
Finally you focus on your sisters mind and change it so that you were always a girl. You open your eyes and see your new female body.
"How are you doing sis" Tiff says
"I'm fine" you say noting your new girly voice
Immedily you start to remember all the girly things that you need.
You decide to finish what you are doing before going to bed.