Ivanka Trump and Jared Kushner celebrate his brother Joshua’s birthday with star-studded party in NYC

Ivanka Trump and Jared Kushner celebrated his brother Joshua Kushner’s 40th birthday with a star-studded party in New York City.

The event was held Thursday night at Katz’s Deli on the Lower East Side of Manhattan.

The birthday boy sported black jeans and a long-sleeved black shirt that he wore unbuttoned and atop a white T-shirt.

His wife, Karlie Kloss — who is pregnant with their third child — selected an off-the-shoulder black dress with a high slit.

The couple held hands as they exited the eatery, which notably served as the backdrop for that scene in the beloved 1989 movie “When Harry Met Sally.”

Though Joshua and Kloss, 32, looked happy and adorable, all eyes were on Trump and Jared, who also walked out of the deli hand in hand.

The first daughter, 43, rocked a low-cut black skater dress, which put her tan and toned legs on display, and matching strappy heels.

She styled her blond hair in loose waves that framed her perfectly made-up face.

Jared, 44, opted for a more toned-down look, donning a navy blue sweater, black slacks and matching dress shoes.

Kloss wasn’t the only model in attendance, as Cindy Crawford and her daughter, Kaia Gerber, were there, too, along with patriarch Rande Gerber.

Crawford, 59, went with a casual ensemble, pairing classic-cut blue jeans with a loose black blouse worn tucked in.

While 23-year-old Kaia dazzled in a red polka-dot midi dress and white ballet flats, her 63-year-old dad sported a black short-sleeved button-up and gray jeans along with gray-and-white sneakers.

Another fashionista, Diane von Furstenberg, also graced the group with her presence. Von Furstenberg, 78, brought the color, selecting a white blazer with magenta and black designs, black slouchy pants and gray leopard-print heeled booties.

She accessorized with a magenta scarf around her neck.

Diplo was also an invited guest, and he eagerly showed the paparazzi his muscles as he left the party.

Granted the DJ, 46, chose to wear a brown mesh tank top, so his arms were already visible, but he made sure to flex while striking a pose outside the establishment.