I was forced to wear dance tights at age 5 for a school play. Being dressed with this piece of feminine cloth (sorry, I didn't attend ballet plays at the time and only girls used to dress with tights around me ) in front of an audience was a cruel experience that I still vividly remember today. I wouldn't got as far as saying that it is the reason for my crossdressing, but I would venture as far as saying that it probably lifted the guilt when I decided to try on pantyhose a few years later.