Nude sister
i am 20 year old boy and my sister is 15 year old.she walks whole day nude.she is not at all ashamed to even walk nude in front of anyone even outside the house.she even play with me and my friends nude or semi nude.she looks beautiful when she is nude especially after a bath because her body color is white and her vagina is also white.she looks like an angel.but i was not like her.i have never been nude in front of anyone from 9 to 16years.now i have a habit of being nude and showing my erect penis to my sister. i often walks nude in front of her.but not to parents.
after that she do not become nude so often i don't know why.i really miss to see her nude.what to do and why is she not becoming nude.is it normal