Did women's sexy underwear get you into crossdressing? First seeing them for how colorful, soft, sexy and skimpy they were, so different than the men's you were wearing. Seeing sexy well built women in them and causing you to become aroused. Then the "draw" into the world macho men are not suppose to go by "trying them on and the wonderful sexual feeling you felt". Felt so good and unlike anything else you had experienced you had to do it again and again and more just might make it get even better.
For me CDing started at age four when I tried my little girl playmates shoes on and they felt so good I didn't want to give them back. At age twelve the above came calling, how could I turn down something that felt so good? Wonder if I would enjoy the clothes and being feminine as much as I do now IF I had been born a girl?