Red carpet transformation: Marion Cotillard goes from baggy denim to chic and sophisticated at Rust and Bone premiere

Just a matter of hours earlier she was spotted looking decidedly casual in a baggy denim jacket, an oversized T-shirt and no make-up as she boarded a plane to Toronto.
But Marion Cotillard had undergone a swan-like transformation by the time she hit the red carpet at last night's (Thursday) premiere of new movie Rust and Bone.
The French actress looked chic and sophisticated as she showed off her petite figure in a strapless gun-metal grey gown, which accentuated her tiny waist.

 

Chic: Marion Cotillard wowed on the red carpet in a strapless gun-metal grey gown

 

 

Red carpet transformation: The chic look the French actress was fashioning was a far cry from the dressed-down ensemble she sported at Los Angeles' LAX Airport earlier in the day

Teaming the simple garment with a pair of unusual royal blue and orange pointed-toe stilettos and a gold cuff bracelet, the 36-year-old star looked simply stunning as she took to the red carpet at the 2012 Toronto International Film Festival.
Smokey eyes, rosy pink lips and a sweeping top knot finished off the brunette beauty's premiere look as she posed alongside her Rust and Bone co-star Matthias Schoenaerts and writer/director Jacques Audiard.

 

Earlier in the day, Cotillard was spotted boarding a flight to Toronto, Canada, looking a far cry from her usual sleek self.
Wearing no make-up, it was clear the Oscar-winning actress was keen to save the glamour for the red carpet as she wandered through Los Angeles' LAX Airport.

 

Premiere pals: Cotillard posed on the red carpet alongside Rust and Bone writer/director Jacques Audiard (L) and co-star Matthias Schoenaerts

 

 

Stunning: The 36-year-old beauty finished off her look with smokey eye make-up, rosy lips and a sweeping top knot

The star showed off her legs in a short patterned skirt which she wore with a printed T-shirt and a baggy blue denim jacket.
She teamed the ensemble with a pair of bright red ankle boots and a grey Fedora hat as she pulled along her silver suitcase.
Rust and Bone, a French-language drama, follows a character called Ali who leaves Belgium to live with his sister and her husband, and ends up forming a strong bond with Stéphanie, a killer whale trainer, who is played by Cotillard.
And the French star said explained she was thrilled to be playing such a 'sexy' character, telling the Toronto Star: 'The sex and the flesh is really part of the story and it had to be in the movie.
'You know when you rediscover your body, love, life ... there’s something very deep and strong and both characters are, I think, very sexy.'

 

 

Casual: Earlier in the day, Cotillard sported no make-up and a baggy denim jacket as she arrived at LAX Airport to board her flight to Toronto