Kate Winslet has signed on for a starring role in the ongoing “Avatar” films, an individual with knowledge of the project tells TheWrap.

“Kate and I have been looking for something to do together for 20 years, since our collaboration on ‘Titanic,’ which was one of the most rewarding of my career,” Cameron said. “I can’t wait to see her bring the character of Ronal to life.”

Nearly eight years after the release of “Avatar” and its record-breaking $2.7 billion worldwide box office gross, the production on the four sequels is officially underway since April.

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The script was written by Cameron with Josh Friedman, Rick Jaffa, Amanda Silver and Shane Salerno. Cameron and Jon Landau are producing through their Lightstorm Entertainment company.

“Avatar 2” is now tagged for a Dec. 18, 2020 release date, with “Avatar 3” set for Dec. 17, 2021.

The fourth “Avatar” film will come out three years later on Dec. 20, 2024, followed by a fifth film on Dec. 19, 2025. Stars Zoe Saldana, Sam Worthington and Sigourney Weaver are also returning.

Deadline first reported the news of Winslet’s casting.