Nicole Kidman (“Being the Ricardos”) and Kristen Stewart (“Spencer”) sat down for a virtual chat for Variety’s Actors on Actors, presented by Amazon Studios. For more, click here.Nicole Kidman and Kristen Stewart both delve into iconography — and play with their own images — on screen. In “Being the Ricardos,” Kidman takes on Lucille Ball, portraying her both in character as TV’s Lucy Ricardo and as a creative force on the set of “I Love Lucy.” It’s a role whose resilience and grit calls to mind Kidman herself, at the top of her game decades into her career.