Ryan Gosling premiered his directorial debut at the Cannes Film Festival on Tuesday, and the international cast were on hand to help out.

The actor's first film behind the camera, , stars actor Matt Smith and actress Christina Hendricks.

Also starring Reda Kateb and star Ian De Caestecker, the film has been billed as a fantasy thriller. It follows Christina's character, a single mother who is swept into a dark underworld, while her teenage son discovers a road that leads him to a secret underwater town.

Ryan's girlfriend Eva Mendes also stars in the film along with Saorise Ronan, and the two are expected to join their co-stars at Tuesday night's premiere.

Eva quashed rumours that the pair had split earlier in March when she said of the film: "Ryan really created the most beautiful, collaborative, creative atmosphere on set. I know I'm biased. He's the best, he's the best.

"French actress Marion Cotillard was also on the French Riviera on Tuesday for a photocall for her latest film,

Wearing a gorgeous couture dress from Maison Martin Margiela, Marion was joined by the Dardenne Brothers, the directors of the film.

The two-time Palme d'Or-winning film-makers look to be possibly heading for their third award following rave reviews from critics.

Also at the annual film festival were Rosie Huntington-Whitely and Elvis Presley's granddaughter Riley Keough. Rosie looked chic in a pale blue cut-out Victoria Beckham dress as she helped launch Magnum's glamorous new commercial to mark the ice-cream brand's 25th anniversary.

Actress Riley is best friends with Kristen Stewart and expected to join Kristen on the red carpet this Friday as she premieres paired a low-cut white blouse with a gorgeous floral A-line midi-skirt from the Valentino Fall 2014 collection as she walked the red carpet for on Monday.

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