Portman and Bana are in final talks to co-star in the film based on Philippa Gregory's historical novel of two sisters vying over Tudor King Henry VIII, Dark Horizons reported.

"The Last King of Scotland" screenwriter Peter Morgan penned the adaptation for the Justin Chadwick-directed film, which is scheduled to begin filming in September.

The Sony Pictures film will be co-produced by BBC Films and internationally distributed by Focus Features, the magazine reported.