Cannes Film Festival banned sheer and voluminous gowns on the red carpet just 24 hours before the festival began.

There's complex etiquette and a rich history behind the French film festival's red-carpet ban of "naked" or "voluminous" dressing.

Cannes Film Festival tightens its dress code, banning nudity and bulky outfits to keep the iconic red carpet flowing smoothly this year, ensuring everyone plays by the same rules.