(Radio.com) Rihanna will be featured in the upcoming sci-fi film Valerian and The City of a Thousand Planets. This week, visitors at Comic-Con got an early glimpse of what she's going to look like in the Luc Besson's film.

The pop star plays an exotic dancer in an alien bar, which is run by a character played by Ethan Hawke. "I chose her as an actress not as a singer and I was surprised with what a gifted actress she is!" Besson tweeted.

The film stars Dane DeHaan and Cara Delevingne as interstellar special agents. In a behind-the-scenes clip, DeHaan said he enjoyed spending two weeks working with Rihanna. He added that when he told friends what she ends up doing in the film, their jaws dropped.

'You guys don't even know," he said. 'Rihanna's part is so crazy." Valerian and The City of a Thousand Planets comes out next summer. Watch a clip of the actors and Rihanna on set here.