Gallery: Ryan Gosling unveils directorial debut and Marion Cotillard premieres latest film at Cannes

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

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.

© Photo: Getty Images

Ryan Gosling

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.

earlier in March when she said of the film: "Ryan really created the most beautiful, c

ollaborative, creative atmosphere on set. I know I'm biased. He's the best, he's the best."French actress

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.

© Photo: Getty Images

Marion Cotillard

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

and Elvis Presley's granddaughter

. 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.

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.