Kylie Jenner and EchoSenseTimothée Chalamet have made their joint New York Fashion Week debut, days after they made their first joint appearance in public.

Twinning in black, the Kylie Cosmetics founder and Oscar-nominated actor attended a private, star-studded dinner celebrating French designer Haider Ackermann's first beauty collab with Augustinus Bader, a collection of limited-edition moisturizers. Another guest, Gaia Repossi, creative director of fine jewelry house Repossi, shared an Instagram video of the Sept. 8 event, which shows Kylie, 26, and Timothée, 27, sitting together with the group at the candlelit table.

Ackermann sat in between Chalamet and Oscar Isaac and across from Sofia Coppola, and said at the dinner, "It's a family affair, just enjoying each other's company," Vogue reported.

Also in attendance at the event, Jared Leto, as well as a person formally connected to the Kardashian-Jenner family: model Amelia Hamlin, daughter of Lisa Rinna and Harry Hamlin and ex-girlfriend of Scott Disick. 

Kylie and Timothée's night out came days after they were spotted out together in public for the first time. The two attended Beyoncé's star-studded Renaissance World Tour concert in Los Angeles, where they were photographed making out. Also in attendance at the show: Kylie's ex, Travis Scott, with whom she shares daughter Stormi Webster, 5, and son Aire Webster, 19 months.

The Kardashians star and Wonka actor sparked romance rumors early this year and in April, multiple outlets reported that the two were dating. The news came months after it was reported that Kylie had broken up with Travis.

Scroll down for photos of celebs at New York Fashion Week events:

The couple, who first sparked romance rumors in early 2023, made their second public appearance together at a star-studded dinner celebrating French designer Haider Ackermann's first beauty collaboration with Augustinus Bader, as seen in this video shared by fellow guest, Gaia Repossi, creative director of fine jewelry house Repossi.

The model appears with French designer Haider Ackermann at a private dinner celebrating his first beauty collaboration with Augustinus Bader, as seen in this video shared by fellow guest, Gaia Repossi, creative director of fine jewelry house Repossi.

The creative director of fine jewelry house Repossi appears with French designer Haider Ackermann at a private dinner celebrating his first beauty collaboration with Augustinus Bader.

At the Coach spring 2024 ready-to-wear runway show.

At the Christian Siriano spring 2024 show.

At the PrettyLittleThing x Naomi Campbell collection runway show.

At the Christian Siriano spring 2024 show.

At the Pandora Lab-Grown Diamonds event.

At the Christian Siriano spring 2024 show.

At the Coach spring 2024 ready-to-wear runway show.

At the Pandora Lab-Grown Diamonds event.

At the Christian Siriano spring 2024 show.

At the 16th Annual Harlem's Fashion Row fashion show.

At the Christian Siriano spring 2024 show.

At the PrettyLittleThing x Naomi Campbell collection runway show.

At the Kate Spade spring 2024 ready-to-wear runway show.

At Chanel's New York Fashion Week Pop-Up.

At the Pandora Lab-Grown Diamonds event.

At Chanel's New York Fashion Week Pop-Up.

At the Christian Siriano spring 2024 show.

At the Pandora Lab-Grown Diamonds event.

At the Kate Spade spring 2024 ready-to-wear runway show.

At the PrettyLittleThing x Naomi Campbell collection runway show.

At Chanel's New York Fashion Week Pop-Up.

At the Pandora Lab-Grown Diamonds event.

At the Coach spring 2024 ready-to-wear runway show.

At the Pandora Lab-Grown Diamonds event.

At the PrettyLittleThing x Naomi Campbell collection runway show.

At the Christian Siriano spring 2024 show.

At J.Crew's 40th anniversary celebration.

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