Robert De Niro and Tiffany Chen turned the red carpet into a date night.
The actor and his girlfriend stepped out in Cannes, France, for the opening ceremony and Partir Un Jour (Leave One Day) screening at the 78th Annual Cannes Film Festival on May 13.
For the milestone occasion, the 81-year-old wore a black tuxedo and bow tie, while Tiffany wore a black dress with thin straps, a curved neckline and shimmery details. She paired a black and silver necklace and earrings with the dress and styled her hair in a slicked back ponytail.
The couple previously attended the festival together in 2023, just one month after they welcomed their daughter Gia, 2—who joins the Taxi Driver star's six older children, including daughter Drena, 57, and son Raphael, 48, who he shares with ex Diahnne Abbott, as well as his 29-year-old twins Airyn and Julian with ex Toukie Smith, plus son Elliot, 27, and daughter Helen, 13, from his previous marriage to Grace Hightower.
And while she had not revealed it just yet, Tiffany had been struggling with Bell's palsy, a condition that impacts muscles in the face, which began just after she gave birth weeks prior.
"When I went home, I started to feel like, my tongue felt strange," Tiffany told Gayle King in an interview clip aired on CBS Mornings in July 2023. "It felt a little tingly, just starting to get a little bit numb. And then I realized my face...my face just felt weird."
When she couldn't eat or clearly speak a week after giving birth, she realized there was "something really going on." Through the challenges, Tiffany noted, she had Robert to lean on for support.
"He was very sweet," the martial artist shared. "He tried to say that he didn't see any difference, he didn't see any change. He was like, 'No…You look fine. Maybe you look a little stern.' And I'm like, 'Really? My whole face is melted on itself.' But he was very strong, very supportive."
For more celebs spotted at Cannes Film Festival 2025, read on...
Angelina Jolie
The actress shimmered in a strapless Brunello Cucinelli fall 2025 gown.
Kristen Stewart
The Twilight alum held on tight like a spider monkey at the Breaking Through The Lens event hosted by Campari.
Robert De Niro & Tiffany Chen
The Goodfellas actor walked the red carpet with his girlfriend of four years in matching black ensembles.
Eva Longoria
The Desperate Housewives alum dazzled on the red carpet in a metallic gold and black Tamara Ralph gown.
Alessandra Ambrosio
Green with envy! The Brazilian model dressed to impress in an emerald green Zuhair Murad gown.
Julia Garner
The Inventing Anna star brought a stark contrast to the bright red carpet with a shimmery, sheer black Gucci gown.
Barbara Palvin & Dylan Sprouse
The model and the Disney Channel alum was living the suite life at Campari's party during the film festival.
Juliette Binoche
The English Patient actress donned a buttery yellow jumpsuit from the Jacquemys Fall 2024 collection ahead of the film festival, where she served as jury president.
Heidi Klum & Tom Kaulitz
The model and her husband matched in all black while stepping out in Cannes ahead of the annual film event.
Bella Hadid
The Orebella founder debuted a new blond 'do while stepping out in all white ahead of the festival.
Jeremy Strong
The Succession alum looked chic sporting gray while posing for photogs.
Halle Berry
The Oscar winner waved to fans while rocking a gorgeous frilled ensemble ahead of the film festival.
Irina Shayk
The model posed with fans while out and about in the French city.
Andie MacDowell
The Groundhog Day actress was a vision in black when arriving in France.