Kylie Jenner shows off PDA with Timotheé Chalamet at the A Complete Unknown LA premiere afterparty

Kylie Jenner was on hand to celebrate the premiere of his latest big film with Timothée Chalamet.

On Tuesday, December 10, Jenner, 27, joined Chalamet, 28, at the afterparty following the LA premiere of A complete unknown at the Dolby Theater, and the couple wasn’t afraid to show off some rare PDA.

Although Kylie didn’t walk the red carpet at the premiere, she and her mom Kris Jenner came to the afterparty and Kylie and Chalamet were “pretty affectionate with each other” as guests filed in.

As the actor – who had just received his fourth Golden Globe nomination for his portrayal of Bob Dylan in the film – settled into his cordoned-off part of the party, Kylie sat on his lap, her arm around his shoulders, and she gave each other a quick kiss.

Throughout the night, the couple mingled with Chalamet’s co-stars and other guests, smiling and happy together. Although they held back on the PDA as the party filled up, Kylie touched her boyfriend often during conversations – and was seen playing with the hem of his jacket a few times.

At the end of the night, they left the party together hand in hand.

The LA outing was a rarity considering how long the two have been romantically linked since April 2023 and how rarely they go out in public together.

However, Kylie has supported her boyfriend’s projects in the past and was also at the LA premiere of ” Wonka last December with her mother under the radar. She also attended the premiere in London a week earlier, sources told PEOPLE at the time.

They were last seen together in New York City in October when they had a relaxed dinner at Little Charli in the West Village. A source later told PEOPLE that they were “very cozy and very sweet” during the date and “looked very in love,” echoing what another insider said earlier this month.

“Everyone loves them together,” a source close to Kylie said. “He’s close to her family and she’s close to his family. It’s a very serious but also fun relationship.”

At the time, Chalamet was filming Marty Supreme in New York City while Kylie was in LA, and the source said they “really found a good balance between work and time spent together.”

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Kylie also recently revealed that she’s in New York City quite often – and that she’s able to fly under the radar in the big city.

“Nobody noticed me. I could really move around,” she said British Vogue in August. She even admitted to frequently “walking the High Line” without being recognized.