The fundraising event is organized by the Kering Foundation and raises funds to "benefit NGOs that address gender-based violence," according to a press release.
Evangelista, 58, shares Augustin, 16, with ex-partner, French businessman François-Henri Pinault. Augustin's father and his wife, Salma Hayek Pinault, are co-chairs of the event.
The mom and son duo made the outing a sweet family moment by wearing coordinating black dress suits. Augustin wore his blazer buttoned up, while Evangelista opted to wear hers open and showcased her formal white shirt.
"It is very important for me to raise him knowing that he is beautiful and knowing that everyone is beautiful," she said. "It's so messed up that I truly believe that, except it doesn't pertain to me."
In an Instagram tribute in honor of his 16th birthday in October, the Canadian fashion model also recognized him as someone who is "My heart. My light."
While her son has been raised relatively out of the spotlight, she shared in a 2013 interview with Harper's Bazaar that they don't share a common love of fashion.
"Let's just say I have a child who doesn't like fashion," she told the outlet at the time. "He wants jerseys. We watch sports and go to games. I do boy things now."
Evangelista's fashion achievements were recently celebrated in Vogue’s September issue. She reunited with fellow fashion icons Cindy Crawford, Christy Turlington and Naomi Campbell for the cover.
Campbell, Crawford, Evangelista and Turlington are also featured in Apple TV+'s documentary series The Super Models, which premieres on Sept. 20.
"I don’t mind and I never did mind aging," Evangelista told Vogue. "Aging gets us to where we want to be, and that’s for me a long life. [Late makeup artist] Kevyn Aucoin was so afraid of wrinkles and he never got them. I want wrinkles — but I Botox my forehead so I am a hypocrite — but I want to grow old. I want to watch my son [Augie] grow into a fine young man. I just want to stick around.”