How to tell your parents you are a nudist!?

I was born and raised in a textile lifestyle meaning we wore clothes around each other all the time, When I was in high school I began taking part in the nudist lifestyle with friends and have been now for years. I have been keeping this from my family ever since my freshman year and now that I am out on my own, I began to realize how hard it is going to be to continue to keep this secret. Please help me to find a way to tell my parents!