You know we're already obsessed with Rihanna's third line for River Island. We've watched the teaser video a good twenty times and been stocking up on thick elastic band undies in anticipation for the launch on September 12th. To help get you a little more in the mood, we've got the exclusive on these behind-the-scenes photos of RiRi working on her line with co-designer Adam Selman (and looking very cute in a "Radarte" T-shirt). You can spy the singer examining the details of an embossed bomber jacket and some psychedelic leggings; she "took to [designing] naturally," said Selman. Also of importance: Rihanna a giant faux fur hat. Is that for sale too? While you peruse the photos and get your Rihanna for River Island wish list ready, enter here to win her entire--yes, entire--collection. It'll make you feel like the only girl in the world, well, other than RiRi herself.