Sandra Bullock and George Clooney cosied up on the red carpet at the opening of the Venice Film Festival.

The Hollywood A-listers were there for the world premiere of their new 3D space thriller Gravity.

For the red carpet, Bullock chose a strapless red J Mendel vibrant red gown which featured origami-style folding and a split skirt.

She accessorised the bold dress with simple black accessories - a tiny box clutch and black strappy sandals. The 49-year-old star wore her hair in a dishevelled upstyle, while a smokey eye brought the look together.

Her co-star Clooney opted for a class black tuxedo, white dress shirt and bow tie.

Gravity, which is directed by Alfonso Cuaron, is about a veteran astronaut (Clooney) and an inexperienced medical engineer (Bullock) who becomes stranded in space following a meteor shower.

Gravity co-stars Sandra Bullock and George Clooney

Bullock in a J Mendel gown