The actress said she doesn't want to "break the rules" Halle Berry changed her dress for the opening night gala at the Cannes Film Festival due to new dress code rules The new dress code rules prohibit nudity and gowns with excessive trains Berry swapped her look last minute because her gown had "too big a train" Halle Berry has had a sudden change of wardrobe plans,

Halle Berry is no longer able to wear her Cannes opening night dress because outfits with long trains are banned from the red carpet.

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