Hailey Bieber supports Kylie Jenner’s ex Timothée Chalamet amid split rumours
Hailey Bieber has shown public support for her best friend Kylie Jenner’s rumoured ex-boyfriend, Timothée Chalamet.
The 29-year-old model shared an Instagram post featuring herself in a colourful Marty Supreme track jacket, promoting Chalamet’s upcoming movie inspired by ping pong champion Marty Mauser.
The jacket, featuring yellow, green, and white tones, nodded to Hailey’s Brazilian heritage. Her husband, Justin Bieber, 31, also joined the campaign, posting a selfie in a pink Marty Supreme windbreaker.
Timothée, 29, shared both posts on his own social media, adding Justin’s song Speed Demon along with three goat emojis for the pop star’s picture, and three Brazilian flags with a fire emoji for Hailey’s mirror selfie.
Earlier this month, a source revealed to Daily Mail that Chalamet had “broken up with Kylie” before, adding, “this has happened before but she talked him into getting back together.” Kylie Jenner, 28, shares her seven-year-old daughter Stormi and three-year-old son Aire with ex-boyfriend Travis Scott, 34.

She reportedly dated Chalamet from early 2023 until their alleged split. Despite the romance being low-profile, due to Chalamet’s desire to be taken seriously as an actor, the couple attended several awards shows together, walking the red carpet side-by-side once at the 70th David Di Donatello ceremony in May.
Chalamet recently spoke about his relationship in a Vogue cover story, setting clear boundaries with the press: “I will not talk about it. I don’t say that with any fear, I just don’t have anything to say.”
The actor has been busy promoting his latest film, set to release on Christmas Day. The promotional campaign has drawn attention from high-profile celebrities, including Tom Brady, who have been spotted wearing movie merchandise.
The campaign also features a creative digital strategy: Chalamet recently posted a clip of an orange blimp flying over Hollywood, synced to the 1982 song Sirius by The Alan Parsons Project.
Google is reportedly involved, generating a digital orange blimp when the movie is searched online.
Kylie Jenner has also been spotted supporting the Marty Supreme brand, previously wearing a navy, black, and white hoodie from the collection during a baseball game with Chalamet in October.
Hailey’s Instagram post signals her solidarity with her friend’s former partner, while Chalamet continues to focus on his career and upcoming projects. The support comes amid ongoing media speculation about his private life, which he has maintained as tightly controlled.