Reiss, Getty Images

Due to overwhelming demand by fans, fashion label Reiss has recreated the simple yet stunning "Nanette" frock that the princess-to-be wore for her engagement photo session with Mario Testino. As part of the Spring/Summer 2011 collection, the frilly white dress has been produced in a lighter weight fabric (while still maintaining its original style) and can be yours for $325 at Reiss online and available in stores beginning Feb. 7. It will likely sell out quickly, so if you're a die-hard Middleton style fan, best to order this chic piece of royal history before it hits the eBay market.