Miller auditioned for the role of Ophelia in the Shakespeare play, Hamlet. If Miller gets the part she will be playing opposite Law who has the starring role. This theatre production will be directed by Kenneth Branagh.
A source told the Daily Star, "Sienna is concerned it will be too painful to play Jude’s tragic partner on stage every night. It will also be dangerous for them to spend so much time together because of their turbulent romantic history. But there’s no denying their chemistry and acting abilities, it would be an electric performance."