Breaking the colour coordinating rules! Marion Cotillard wears dramatic black and navy gown for Rust and Bone premiere

She was youthful and fresh in a sweet peach dress at the film's photocall earlier today.
But Marion Cotillard stepped up the glamour for the Rust And Bone premiere at Cannes this evening.
The Academy Award-winning French actress looked incredible in a floor-length strapless gown, with a full skirt and a belt at the waist.
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Dramatic entrance: Marion Cotillard wore a stunning black and navy gown to the premiere of Rust and Bone at Cannes this evening

The dress consisted of a belted black corset, unusually teamed with a full navy skirt.
Marion wore her hair in an elegant up 'do, fixing in a large bun with a silver band.

The 36-year-old kept her jewelry minimal, wearing only a simple silver bracelet.

Unusual combination: While navy and black aren't normally thought of as a stylish colour theme, Marion pulled the look off with aplomb

Team effort: Marion was accompanied by her Dust and Bone co-stars Matthias Schoenaerts and Armand Verdure, and the director Jacques Audiard

Simple but elegant: The Academy Award-winning actress wore her hair up in a full bun, with minimal make-up and jewelry

She was accompanied by her co-stars Matthias Schoenaerts and the director Jacques Audiard.
Rust and Bone has been selected to compete for the Palme d'Or at the 65th International Film Festival.
Marion stars in the film as a woman who loses her legs and must struggle with the help of an unlikely ally to rebuild her life.

Slender silhouette: Marion's belt, which nipped her dress in at the waist, showcased her slim figure

Challenging role: Marion stars in Rust and Bone as a woman who loses her legs and must struggle with the help of an unlikely ally to rebuild her life

Pulled it off: Marion has admitted that she was initially daunted by the role on Rust and Bone

The film, in French De Rouille et D'os, was, written and directed by Jacques Audiard (A Prophet), centres on the struggle of the two lead characters- played by Maion and Matthias Schoenaerts- to rise above their difficult circumstances.
Marion plays Stephanie, a killer whale trainer whose strength of will is put to the test when she suffers a horrific accident at work.
She forms an alliance with Schoenaerts' Ali, an inarticulate single father attempting to support his five-year-old daughter.

Another winner! Eva Longoria showed up at the premiere wearing yet another beautiful full-length dress featuring a long train

Taking the plunge: Eva's low-cut dress showed off her decolletage and back

Fabulous in detail: Fan Bingbing showed up wearing a beautiful oyster pink gown featuring a transparent lace cape

Marion has admitted that she found the challenge of playing a troubled and enigmatic woman who must rebuild her life after losing her legs dauntng.
She said: 'On the whole when I read a script ... I immediately understand the character.'
'With Stephanie I reached the end of the script and I still didn't know who she was.'

Sparkling for the summer: Freida Pinto wore a glittering yellow gown with a daring thigh-high split up one leg, while Hofit Golan wore an eye-catching silver number

'I said to Jacques, I'm a bit scared, I don't know how this is going to work. And he said, 'I don't know either.''
Schoenaerts meanwhile admitted to journalists at the festival that he had been  intimidated by his co-star, calling her 'an exceptional actress'.
'I thought, there's Jacques, there's Marion, I'm never going to manage,' Schoenaerts said. 'I'll be useless.'

Goofing around: Freida and Jane Fonda teamed up for the photographers

Eva Longoria was stunning as ever at the premiere in a full-length white gown featuring a long train and plunging neckline. 
She wore her brunette hair loose with old-Hollywood curls framing her face.

Competing: Rust and Bone has been selected to compete for the Palme d'Or at the 65th International Film Festival