It is Part of all of us, I beleive
You are who you are. And most of us feel and or beleive we are all girls trapped in a mans body. If it feels natural to be in womans clothing, then that is correct, because that is what you beleive is true. You are a true woman. I feel the same way, I love the natural feel of long hair rubbing against my shoulders and back, love the feeling of lipstick on my lips, nylons on my legs and the feeling of wearing a beautiful dress that sways as I walk. It is just natural.
You need to practice and learn to know the difference and learn to handle being both (male/female), if that is your choice. It is not easy, but most of us must learn to balance the two lives.