Now that Sienna Miller has signed on as the face of Pepe Jean she will no longer be able to wear all the other jeans she is so keen on. Here are a couple of photos of her wearing Serfontaine Cruiser jeans. This brand of jeans are very popular with young hollywood celebs such as Hilary Duff, Jada Pinkett Smith, Ashton Kutcher, Josh Hartnett and Sean William Scott.