Cannes Film Festival: a look back at some of the most spectacular red-carpet moments

The opening of the 68th Cannes Film Festival is almost upon us. Before we get to see the red carpet crawling with the latest creations imagined by celebrated designers and bear witness to a few fails that will make the crowds smile, we take a look back at some of the most memorable walks up the steps to the Palais des Festivals from the last few years.