Debicki joins the royal family as Princess Diana, replacing Emma Corrin. "Princess Diana's spirit, her words and her actions live in the hearts of so many," Debicki said in a statement. "It is my true privilege and honour to be joining this masterful series, which has had me absolutely hooked from episode one." This season will focus on Diana's break from the royal family in the 1990s, meaning that Debicki has a hefty role to take on.
Debicki certainly understands the legacy she's taken on as Diana. "She's like a symbol — like a magical person," the actor told Gotham Magazine in 2020. "I'm coming to understand more intimately how she existed and still exists very profoundly in collective consciousness. I think it's amazing that from age 7, I would remember somebody who had no actual impact on my life as a child in Australia—and yet I was very aware of her presence in the world. I remember seeing her face on magazines. My mother was very aware of her, as I think a lot of women close to her age were. She really followed her quite intimately because she represented something extremely human and extremely symbolic."