Sequel talk has been on-going since before the film hit theatres and since then we've had plenty of fussing around a bigger pay day to secure the return of star Jamie Dornan and the confirmation that original director Sam Taylor-Johnson has left the production. That's no big surprise after her on-set issues with novelist E.L. James and we've also heard that the writer wanted to be more heavily involved this time around. So while we wait to find out what filmmaker is going to be getting that not-exactly-tasty job, we're also starting to hear the first casting rumours.Obvously Dornan and leading lady Dakota Johnson will be back being naughty in front of cameras for Fifty Shades Darker but there are some significant new roles to be cast as well, especially the role ofLeila. Her character was previously in a relationship with Christian Grey and she causes problems for the new couple in the story of Fifty Shades Darker. We're now hearing that former model Cara Delevingne has been linked to the role, and with the film likely to start shooting soon an official annoucement could be on the way.