Started somewhere around 6 or 7. Trying on moms underwear because I loved the feel of silk and satin. The next age I remember when it really took off was around 10 or 11. We had just moved and I would occasionally stay at my grandparents where my parents had stored things in the attic. I remember finding a giant bag of bras, panties, girdles, and stockings. It was heaven and I haven't looked back since.