A costume shop that's divided into two. One where you become what the costume is of (like a dog costume makes you a dog, baby costume makes you a baby, etc) and one where you become whichever the costume is suited for (girl wears boy costume becomes a boy, wears a costume for a 5 year old become that age, etc) Shopkeeper is a 40 year old witch. She will ask if you want to become the costume or become what its meant after asking gender.