I bought a video camera and took some test shots with my sister! My sister started a little fashion show by changing into various clothes... I took pictures of her cleavage, and she didn't seem to mind that her panties were visible through her miniskirt. When I took pictures of her under her skirt from a close distance, something strange started to happen. She was clearly excited, and her panties were soaking wet with stains. "You can take more pictures if you keep it a secret from Mom and Dad. But in return, please take nice pictures," she said, reaching for my erect cock!!