Kristen previously spoke out about the unwritten rule that women must wear heels on the red carpet at Cannes after a group of female attendees were reportedly turned away at the premiere of Carol in 2015 for wearing flat shoes.
The world's top festival also promised to be more transparent in its selection process after facing years of criticism over the lack of women directors in its main competition.
Soon, Variety reported that festival director Thierry Fremaux had attempted to clear up the requirements for Cannes red carpets, saying, "Nobody is obligated to wear heels on the red carpet". She's shut down sexist questions at panels, insisted on a more diverse and female jury alongside Khadja Nin, Ava Duvernay and more and lately made a powerful statement when she led a Cannes protest in the spirit of Time's Up. Now, on the heels of a red-carpet protest, the festival's director has pledged to strive for equality.
Kristen took the shutterbugs by surprise as she removed her black stilettos and walked bare footed.
'It has become really obvious that 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".
'It can work both ways. "If you're not asking guys to wear heels and a dress, you can't ask me either".
She added: 'I feel like you can't ask that anymore, but it's still a given. Fans even took to social media to applaud this act of rebellion.
This is the first Cannes festival since allegations of sexual abuse were first made against producer Harvey Weinstein past year.