Now it seems Kristen Stewart, a member of this year's jury at the film festival, has flouted the ban on flat shoes - by instead going barefoot on the red carpet.
The former Pussycat Doll Nicole Scherzinger meanwhile opted for a structured princess gown as she walked the red carpet for the same film screening.
As the cooler, slightly more hip, younger sibling to the Academy Awards, the Cannes Film Festival is now captivating the film and fashion world.
Not just Kristen but others too have spoken out against the policy, including British actress Emily Blunt, who said: "Everyone should wear flats, to be honest".
"If [a man and I] were walking the red carpet together and someone stopped me and said, 'Excuse me, young lady, you're not wearing heels".
Kristen Stewart flouts footwear ban at Cannes Film Festival
While she was climbing the stairs the photographers kept taking pictures.
Kristen also addressed the saga in an interview with Vanity Fair during the 2016 festival, stating that she felt the dress code was antiquated and sexist.
Kristen Stewart ditched her heels on the way to "BlacKkKlansman" premiere at the Cannes Film Festival.
"There's definitely a distinct dress code, right?"
Stewart doubled down on her previous comments during a roundtable discussion past year.
"We shouldn't be wearing high heels anyway", she added. 'People get very upset if you don't wear heels, but I feel that you can't ask people that any more. "I understand the whole theme with black ties, but we need to allow women to walk without heels". Like, if you're not asking guys to wear heels and a dress, you can not ask me either, which is nice 'cause that's different. You have to wear a dress.But now, it's awesome.More news: Tom Cruise's Mission Impossible: Fallout unveils chaotic new poster, announces release date
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