Sienna Miller for Mississippi Grind
Sienna Miller has joined the cast of drama Mississippi Grind.
The actress will star with Ryan Reynolds and Ben Mendelsohn in the new film by Half Nelson's Ryan Fleck and Anna Boden, Deadline reported.
Ben and Ryan play two gambling addicts on a road trip through the South in a bid to change their luck and win back all they have lost.
It is not known what role Sienna will have in the movie.
Filming is due to begin in New Orleans in January next year.
Sienna, who became a mother last year, had cut down on her acting work but is due to appear in wrestling drama Foxcatcher with Channing Tatum, out in January 2014, and recently signed up for a role in Vince Vaughn's new comedy Business Trip.