For me the number one outfit is Marion Cotillard’s Lefranc Ferrant jumpsuit:
What I like about this outfit is that the actress goes beyond the beaten paths. A jumpsuit can easily make you look like you’re wearing a boilersuit. Marion Cotillard’s jumpsuit is more like a strapless dress whose bottom would have been modified. The result is a pretty convincing.
I am not the only one to have noticed this outfit: I have read positive reviews but also comments of people who hate this look. At least Marion Cotillard will have drawn attention to herself, which is the objective of each celebrity going to Cannes.