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.

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

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.