By Chiara Fiorillo Meghan Markle’s new lifestyle brand ‘American Riviera Orchard’ follows an unusual but very profitable royal tradition that sees members of the Firm promote and sell their own products. The Duchess of Sussex’s new venture was announced last week with the launch of an Instagram page and a website where people can join a waiting list to be informed about products available. The company’s Instagram account bio reads simply: “By Meghan, The Duchess of Sussex.” Some critics have hit out at Meghan claiming she wants to profit from her royal title but she is not the first member …