Robert De Niro’s girlfriend arrived at the actor’s 80th birthday party with their baby girl, Gia.

Tiffany Chen and De Niro welcomed their daughter on April 6 but did not announce her arrival until a month later, leaving fans surprised.

The father-of-seven welcomed a glittering array of guests to Locanda Verde in TriBeCa, the neighborhood where he helped found a film festival in the wake of the 9/11 attacks.

Big stars attended the event, including Christopher Walken, 80, who first starred with De Niro in the 1978 The Deer Hunter.

Martin Scorsese, Francis Ford Coppola, Paul McCartney, George Lucas, Uma Thurman, and Alec Baldwin were also in attendance.

Chen was seen sporting a hoodie and sweats while pushing baby Gia’s stroller as she walked toward the restaurant.

She accessorized with a pair of sunglasses and kept her hair in a ponytail.

The birthday celebrant wore a comfy-looking polo shirt under his charcoal blazer for his big day.

Paul McCartney, who wrote (I Want To) Come Home for the 2009 movie Everybody’s Fine, starring De Niro, was seen wearing a cobalt shirt under a blue blazer that he matched with a pair of jeans.

He then completed his attire with matching aviators.

Nancy, who married Paul in 2011, looked dazzling in her black top and floral skirt that fell past her knee. She accessorized with earrings and a long necklace with a huge pendant.

Gia Virginia Chen-De Niro is the actor’s seventh child. Chen said their daughter has made life more fun and that the best thing about De Niro is ‘how much he loves his family.’

“That might make me a little teary-eyed,” she told CBS Morning.

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