Natural Nudist?

I am a working mommy. I often have the same repetitive routine when I come home: come in, bag and jacket down hug and smooch the kiddos. Until yesterday. I came home go to put my bag and jacket down when my daughter whom I lovingly and jokingly called "cinnamon" for awhile (well, from birth until yesterday) came out of the kitchen stark raving naked. She proudly put her hands on her waist and shouted "Hello, look at this!" Unfortunately, my first reaction was not one of raucous laughter, but one of "What in the world? We wear pants in our family!" She ran immediately to her room put on her pants and into a self-imposed timeout.  Did I mention that we are firm believers that our children should know the names of their body parts? No, well let me tell you that while in her self-imposed timeout she repeated to herself, "Mom doesn't want to see my vagina. I  wear pants."  Now. I. Laughed. I may have even peed a little, but that's beside the point.

So, I ask of you:  Are three year olds natural nudists? Am I big bad mama with too many years of a "clothing is not optional" attitude?  Have I harmed her inner hippie? Will she refuse to go green?  Oh no, will she become a corporate lawyer demanding a fourteen shot espresso now throwing plastic bags in the wind just because she can?