Diane channeled a fierce warrior look with a sculptural dress from the spring Karl Lagerfeld collection, teamed with thigh-high leather boots. See how she manages to make the trickiest of accessories look as though they're the easiest thing to just throw on? She's our style hero.
And star of the film Rachel McAdams looked every inch the screen siren in a stunning floor length Alberta Ferretti gown. And, continuing the ladylike glamour, she sported a 1940s, perfectly curled hair style with understated lipstick - set to be this season's beauty bag essential.
The stylish duo have set the red carpet bar high already this week - we can't wait to see what they have up their sleeves for the Golden Globes on Sunday night.More