Pic also stars Armie Hammer and Alicia Vikander with Guy Ritchie directing.
Ritchie will also produce along with producing partner Lionel Wigram. John Davis is also producing.
The role would mark her first major role following "The Great Gatsby," which grossed more than $300 million worldwide. The role is a huge get for Debicki given that the studio sees it as a splashy role given that they had eyed actresses like Rose Byrne and Charlize Theron for the part before deciding to give Debicki a shot at the part.
Debicki can currently be seen is currently on stage at the Sydney Theater Company opposite Cate Blanchet in "The Maids."
She is repped by CAA and Shanahan Management.
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