Scarlett Johansson in Stella McCartney

Busy on the campaign for the re-election of President Barack Obama, Scarlett Johannson turned to the trusty LBD to host the fashionable fundraiser, Runway to Win. Choosing Stella McCartney’s black mesh and peplum dress - a red carpet favourite - ScarJo kept things simple with open-toed heels and a black clutch, while a chic black coat kept the New York chill at bay.