See those pictures of Britney pantiless reminds me of when I took my daughter to get Icecream one day. She was only 3. She wore her favorite dress and she was sitting on a curb while I was waiting in line. A woman walked up to me and whispered in my ear "do you know your daughter is going commando?" I didn't quite understand and I looked at my daughter and there she was sitting with her legs spread with NO PANTIES!!.
Now on a serious note. When I was younger I too never wore underwear with my jeans. This was way before the thong days, but I always wore underwear with a dress! How could you not?