At the Chopard 150th anniversary celebration, the celebs in Cannes brought some showstoppers to the table. Kate Beckinsale does drapping right in this Temperley London Diabolo gown. Marion Cotillard stepped outside the box and into a Lefranc Ferrant jumpsuit. Naomi Watts glowed in her RM by Roland Mouret Ephron jersey dress and perfect makeup. Bringing the young Hollywood to the event were Paris and Nicky Hilton, as well as Lindsay Lohan, who may face jail time for skipping the country when she is due in alcohol classes.