Who needs clothes when you have a full beat? Not Julia Fox. The mother, author, and actress extraordinaire just went fully sans clothes while riding the New York City subway. All for a good cause, of course.

Both the model and television personality ‘dare to bare’ in the make-up brand’s new ‘I Only Wear M-A-C’ campaign, alongside Odell Beckham Jr

In addition to Stewart, MAC Cosmetics also tapped actress and model Julia Fox, football star Odell Beckham Jr., singer Beabadoobee and reality TV star Tiffany Pollard — who all stripped down for the campaign.

MAC has tapped “outspoken cultural icons” Martha Stewart, Julia Fox, Tiffany “New York” Pollard, Beabadoobee and Odell Beckham Jr. for its latest campaign titled “I Only Wear MAC .”

The first beauty product I ever splurged on was a nude lipstick from MAC. Even as a budding beauty-lover in middle school, I knew a classic when I saw one. MAC lipsticks are a cultural touchstone, much like Martha Stewart,

Martha Stewart posed for a new MAC Cosmetics campaign, showing off the brand's nude lipsticks, and gives PEOPLE the scoop on how to take the ultimate thirst trap photo.