International film stars, directors and fans have begun descending on the French Riviera for Cannes. The 79th edition of the world's most famous film festival begins on May 12 and will run for the next two weeks, with a constant parade of red carpets, premieres and the best of cinema. The lineup is indie and international but one big hitter is notably underrepresented in the competition: and that's Hollywood. Eliza Herbert takes a look at what's to come.