Halle Berry made a last-minute outfit change when Cannes organizers announced a new dress code, while Heidi Klum pushed the boundaries and wore a long train anyway.

Halle Berry revealed that she was going to wear a Gaurav Gupta dress to the Cannes Film Festival opening gala on May 13, but had to switch her dress due to the festival's rule that prohibits dresses with a long train.

The "Monster's Ball" actor revealed exactly which part of her dress made her look ineligible for the red carpet.