There's just something about redheads. I'm not sure if it's the hair or how we've come to associate it with a wild and fiery nature. Maybe we all feel we have a little of that nature inside, whether we show the world or not, and therein lies the attraction. In any case, I'm a big fan. I created a board on Pinterest with some of my favorite redheads. These include unnamed models with kick-ass hair, as well as actresses I admire like Julianne Moore and Renee Russo, both of whom I think are incredibly sexy, but also carry with them the touch of class that makes them even more so. If you appreciate redheads like I do, here's some eye candy: http://www.pinterest.com/giannaday/sexy-redheads/. None of the pictures are pornographic, though some are risque.
If your delicate sensibilities aren't offended, you might also want to check out Boudoir & Burlesque.