Kate Winslet is in talks to join the New Line ensemble drama “Collateral Beauty” starring Will Smith.

The cast also includes Helen Mirren, Ed Norton, Michael Pena and Naomie Harris. Keira Knightley is also in negotiations to join the cast.

The Allan Loeb-written script centers on a New York advertising exec (Smith) who experiences a deep personal tragedy. His colleagues devise a unique plan to break him out of his depression — which works, but not in a way that anyone imagined.

Details surrounding Winslet’s role are unknown at this time.

Village Roadshow Pictures is co-producing/co-financing the project, which is targeting a mid-February start in New York. “Collateral Beauty” has just been slated for release on Dec. 16, making it another Winslet project in prime position to make an award season run.

Winslet is currently nominated for best supporting actress for her role in “Steve Jobs.” She next appears in the crime thriller “Triple 9,” starring Casey Affleck and Anthony Mackie, which opens Feb. 26, and she is also attached to an untitled Lee Miller pic.

She is repped by CAA and United Agents. TheWrap first reported the news.