I Know That Girl is a porn paysite that runs of the fantasy of meeting your favorite pornstar in real life and getting to fuck her however you want. With the number of people with this fantasy, there is no surprise that this website became incredibly popular. It features hundreds of full length, Full HD videos with more being added all the time. Though, the website doesn't belong to any network and as such subscribing to it doesn't come with additional benefits, so you might want to explore other options as well if you want to make get the most bang for your buck.