Rihanna and Cara Delevingne are proving that they are taking this transition into acting very seriously indeed, by starring alongside each other in an upcoming science fiction epic. 'Valérian and the City of a Thousand Planets' is being directed by Luc Besson and is coming to theaters in 2017.

RihannaRihanna is returning to the big screen

While London model Cara has been doing her damn hardest to convince the world that acting is her biggest passion in life, despite her extensive work in the fashion industry, Rihanna has also been coasting along and getting involved in Hollywood - though her busy music-making schedule hasn't made it easy. So far she's only had cameos in 2012's 'Battleship' and 2013 comedy 'This Is the End' and one main role as the voice of Tip in the animated film 'Home'. But now she's taking it to the next level by landing an as yet undefined role in time-travelling sci-fi adventure 'Valérian and the City of a Thousand Planets'.

More: Watch the trailer for 'Home'

The BAFTA nominated Luc Besson is at the helm; a filmmaker best known for his work on 'The Fifth Element', 'Taken' and 'The Transporter'; and Rihanna will co-star with Cara Delevingne who plays Laureline, the partner and would-be love interest of the titular character Valerian who will be played by Dane DeHaan.

Based on a graphic novel by Pierre Christin and Jean-Claude Mézières, the film follows two government agents responsible for overseeing relations across the universe. They work for Commander Arün Filitt (who will be portrayed by Clive Owen), who charges them to travel to the city of Alpha; a sprawling metropolis inhabited by various lifeforms who all unite their skills and abilities in order to create the perfect world. The peace is soon to be disrupted, however, when dark forces take over the galaxy.

The rest of the cast is yet to be announced but a release date of the summer 2017 has been announced.