Debicki will join a new cast for the series that includes Imelda Staunton as Queen Elizabeth, Lesley Manville as Princess Margaret and Jonathan Pryce as Prince Philip. Staunton succeeds Olivia Colman and Claire Foy in the role.
“Princess Diana’s spirit, her words and her actions live in the hearts of so many,” Debicki said on Twitter. “It is my true privilege and honour to be joining this masterful series, which has had me absolutely hooked from episode one.”
Debicki, a 29-year-old Australian actress, is seen as a rising star after a breakout performance in Steve McQueen’s “Widows.” She also stars in Christopher Nolan’s upcoming thriller “Tenet.” Other credits include “The Great Gatsby,” “The Burnt Orange Heresy” and “Guardians of the Galaxy Vol. 2.