Whilst Emma Watson was wowing the crowds at the London premiere for ‘My Week with Marilyn’ on Sunday night, Michelle Williams was doing the same on ‘Late Night with Jimmy Fallon’.

She took things up a notch from the predictable nude or neutral-coloured gown to don this Valentino Spring 2011 dress.

Her halter leather dress has lazer-cut details with a fishnet panel on the bodice and hemline.

Michelle proved to her British co-star that you can play around with a pixie cut, by giving herself a side parting and sweeping her textured locks to one side.

The actress didn’t stay totally away from nude of course; she wore nude Louboutins to complete her look.

‘My Week with Marilyn’ hits theatres this Wednesday in the US and Friday in the UK.

Credit: Style.com