The 2024 Cannes Film Festival is here. Celebrities are descending upon the South of France and fashion fans the world over are paying close attention. If you’re anything like me, you might have admired red-carpet looks without ever noticing that celebrities were adhering to a strict Cannes dress code. As it turns out, the film festival has regulations about what you’re supposed to wear for the screenings—and certain sneaky celebs have broken the rules in past years!

To get you up to speed, I’ll tell you exactly what the official Cannes Film Festival’s website says about its dress code: “To attend the gala screenings, a dinner jacket (tuxedo) with a bow tie or evening dress is required. In the absence of this, you may wear a cocktail dress, a dark trouser suit, a dressy top with black trousers, a black dress, a black or midnight blue suit with a bow tie.”