Chalamet — who did not appear in any of the famous family’s official photos from their festive fete — appeared to be wearing a black suit and a white button-down shirt.

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The “Wonka” actor, 27, and Jenner, 26, were first linked in April.

At the time, a source told “Entertainment Tonight” that the relationship was nothing “serious” and that the pair were just hanging out and “seeing where it goes.”

4Timothée Chalamet was spotted chatting with Kylie Jenner at her family’s Christmas Eve party.Landon Barker/Snapchat4The couple did not share any photos together.GC Images

“It’s been really fun for her because it feels a lot different than her past relationships. It’s new and exciting for Kylie, and she’s having a lot of fun,” the insider added.

The makeup maven was later spotted leaving Chalamet’s home in Beverly Hills, Calif.

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After months of keeping their relationship under wraps, the two went public by packing on the PDA at one of Beyoncé’s “Renaissance” world tour stops in Los Angeles in September.

4The couple confirmed their romance in September by making out at a Beyoncé concert.TMZ

During a recent chat with MTV, Chalamet admittedly forgot he had attended the concert until the interviewer reminded him.

“That was great. Hard to be present,” he answered with a grin, seemingly alluding to his makeout session with Jenner.

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The stars were also snapped enjoying a daytime date at the US Open in New York in September as they began to step out together more.

4Jenner shares two kids with rapper Travis Scott.kylie jenner / InstagramWhat do you think? Post a comment.

Most recently, Jenner and Chalamet attended WSJ. Magazine’s Innovator Awards in November, where her new clothing line, Khy, was honored, but they posed for photos separately.

Other famous faces at this weekend’s over-the-top Christmas bash at Kim Kardashian’s $60 million mansion included all of the Kardashian siblings, mom Kris Jenner and longtime pal Paris Hilton.

Kylie shares daughter Stormi, 5, and son Aire, 1, with her ex-boyfriend Travis Scott, while Chalamet’s former flames include Johnny Depp’s daughter Lily-Rose Depp and Madonna’s daughter Lourdes Leon.