It was a long time ago, but my first recollection was my best friend's little sister dressing me up with bra, undies, dress, makeup, and nail polish, and proceeded to parade me in front of my mom and one of her close friends.
It ended up resulting in my mom telling me to "take that stuff off", which led to me thinking that it was a bad thing and I should hide it. I was hooked though. I knew from that point on, that I was different.