Luc Besson, a well-know film director, took his Instagram to announce Rihanna as one of the stars of his newest project Valerian and the City of a Thousand Planets!

Her role isn’t specified, but Besson, the filmmaker behind “Lucy” and “The Professional,” teased that the part was a big one.

She joins a cast that includes Dane DeHaan (“The Amazing Spider-Man 2”), Clive Owen (“Closer”) and Cara Delevingne (“Paper Towns”). Filming begins in France next January and the movie is expected to hit theaters on July 21, 2017.

The film adapts Pierre Christin and Jean-Claude Mezieres’ graphic novel and unfolds in the 28th century when humanity discovered time travel. The big-budget project has tapped three elite visual effects firms to help realize Besson’s vision of the future — Weta Digital, Industrial Light & Magic and Rodeo FX.