The My Week With Marilyn star wowed the crowd with her monchrome, strapless gown by none other than high street chain H&M as part of their bespoke Concious collection.
The 31 year old also gave a nod to her character Marilyn Monroe with her clutch by Olympia Le tan, in the style of Arthur Miller's The Misfits (Monroe's husband who wrote the screenplay that she later starred in).
Another person who stole the night away from the awards themselves was Livia Firth, wife of the real life Mr Darcy. Back in 2009 Livia vowed to attend all red carpet event with her husband dresses solely in sustainable fashion and has stuck to it whilst gradually convincing other star to do the same as well as encouraging designers to reduce their carbon foot print via their clothes.
Last night Livia attended the awards in a simple yet stylish pant suit, whilst The Help star Viloa Davis wore a stunning salmon Valentino gown as part of the Green Carpet challenge and current man of the moment Michael Fassbender wore Giorgo Armani as part of the challenge.
