Legislating dress on a mass scale is bumptious work, as the 78th Cannes Film Festival administration is discovering. Here, signal moments from Cannes' first week.

This year’s Cannes Film Festival has barely started and already has been an attention-grabbing affair, from new rules for its red carpets, nerves about potential U.S. tariffs and the return of Tom Cruise.

CANNES, France — The 78th Cannes Film Festival got underway Tuesday, kicking off two weeks of French Riviera frenzy. Here are five things to look for at this year’s Cannes: It might still be springtime, but, make no mistake, multiple Oscar campaigns will be launched in Cannes.