After winning an Emmy for the FX series Pose, Billy Porter has Hollywood at his feet, and sources tell Collider that not only is he in talks to join Sony's new Cinderella movie, but he's also being eyed to voice the man-eating plant Audrey II in Warner Bros.' new feature adaptation of Little Shop of Horrors. Let's start with Little Shop, since that's the bigger news -- though to be clear, it remains unconfirmed at this time. Nearly three years ago, it was announced that Warner Bros. had tapped Greg Berlanti to direct a new musical …