That's a very difficult question for me to answer. I did not have the urge to try on female clothing (my mother's nylons, in my case) until I entered puberty at age 11 or 12. But when I was much younger, we lived in an old house that had a very large walk-in closet that doubled as a playroom. At the age of 3-5 I would often play with my toys on the floor, close to where my mother often left her nylon stockings with her shoes. I would sometimes pick them up and fondle them, but not try them on. So was I acting out something that was always in me, or was I just responding to natural childhood curiosity?