Timothée Chalamet Wishes 'Dune' Costar Zendaya a Happy Birthday

“Happy Z Day,” the actor wrote on Instagram alongside a photo of the 'Euphoria' star

Timothée Chalamet is sending love to Zendaya on her special day.

The 27-year-old actor took to his Instagram Story to post a special shout-out to his Dune costar and "sister" on Friday.

The Call Me by Your Name star shared a photo of the actress, newly 27, in an orange puffer jacket making a silly face.

“Happy Z Day,” he captioned the sweet post, which he also decorated with a balloon and birthday cake emoji.

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Chalamet — who is currently romantically linked to Kylie Jenner — and Zendaya, who is dating Spider-Man costar Tom Holland, are good friends.

The Euphoria star even brought the actor along as a plus-one to a party earlier this year.

In June, the costar pals kicked off the summer together at a Los Angeles birthday party for Zendaya's assistant Darnell Appling.

Photos and footage shared to social media showed the actors partying hard at the Pan Pacific Park gathering.

Related: Zendaya Celebrates Timothée Chalamet as He Turns 27: 'Happy Birthday to This Kid'

One video captured Zendaya dancing with other partygoers to Beyoncé's "Before I Let Go." A different clip showed Chalamet dancing and chatting with guests, red solo cup in hand.

Another photo from the event showed Chalamet swapping his Los Angeles Lakers jersey for a T-shirt that reads "Darnell's Freaknik '23," a shirt that other attendees also wore, per photos shared to Appling’s Instagram Story.

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The pair is set to return as Paul Atreides and Chani in Dune: Part Two, the followup to their 2021 film based on the sci-fi book saga of the same title.

Originally slated to hit theaters on Nov. 3, 2023 — around a year after filming wrapped — the release of the sequel has been delayed to March 15, 2024 amid the ongoing strikes in Hollywood.

Related: Timothée Chalamet on His Instant Chemistry with 'Dune' Costar Zendaya: 'A Breath of Fresh Air'

According to an official synopsis, the Denis Villeneuve-directed film will pick up where the first Dune movie left off.

The 2024 film will “explore the mythic journey of Paul Atreides [Chalamet] as he unites with Chani [Zendaya] and the Fremen while on a warpath of revenge against the conspirators who destroyed his family. Facing a choice between the love of his life and the fate of the known universe, he endeavors to prevent a terrible future only he can foresee,” per the synopsis.

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