All About Justin Bieber’s Siblings Allie, Jazmyn, Jaxon, and Bay

THE RUNDOWN

• Justin Bieber has four younger siblings—Jazmyn, Jaxon, Bay, and Allie—all from his father Jeremy Bieber’s side.
• The group was last seen together in a rare family photo posted by their father in March 2025.
• Though they’ve mostly stayed out of the public eye, the siblings have occasionally appeared in Justin’s posts over the years.

Justin Bieber may be the only child of his parents Pattie Mallette and Jeremy Bieber, but he has four half-siblings through his dad. Over the years, the singer, who is the oldest of the group, has shared moments with his brother and sisters online. Allie, Jazmyn, Jaxon, and Bay have remained largely out of the public eye otherwise.

The most recent public photo of the full group was shared in March 2025, when Justin’s father posted a picture of his children sitting on a couch together. He wrote, “My crew.”

Here’s what to know about each of Bieber’s siblings and their relationship with the singer.

Justin has four younger siblings, all through his father, Jeremy. His half-siblings—Jazmyn and Jaxon—are Jeremy’s children with his former partner Erin Wagner. In 2018, Jeremy married Chelsey Bieber, who had a daughter, Allie, from a previous relationship. That same year, Chelsey and Jeremy had a daughter together, Bay.

Justin is a proud big brother who has been supportive of all four siblings on social media over the years.

Allie was born on April 7, 2007. She is Chelsey’s daughter from a prior relationship and became Justin’s stepsister when Chelsey and Jeremy married. In 2020, she posted a photo with Justin and his siblings inside a recording studio, and she also appeared in a 2021 selfie posted by Justin, alongside Jazmyn and Hailey Bieber. Justin captioned the photo, “My favorite girlsss 🥺😍❤️.”

Most recently, Allie appeared in the group photo shared by Jeremy in March 2025, sitting beside her siblings and stepbrother.

Jazmyn, born May 30, 2008, is Justin’s half-sister from Jeremy’s relationship with Erin Wagner. Justin has posted birthday tributes to her over the years, including one in 2022 where he wrote, “Happy 14th birthday to the sweetest, most beautiful, precious, little sis a brother could ask for.”

In May 2024, Jazmyn launched her first fragrance, SweetSixteen, and described it as a “dream come true” on Instagram.

She has also shared photos with Justin and Hailey, including a June 2022 post captioned “Family walks ❤️.”

Jaxon, born Nov. 20, 2009, is Justin’s half-brother and the youngest child of Jeremy and Erin. Like Jazmyn, Jaxon has appeared in various family photos with Justin, who called him “such an amazing, sweet, handsome, special boy” in a birthday tribute in 2021.

Jaxon attended Coachella with Justin in April 2025.

Bay was born on Aug. 16, 2018, and is the youngest of the Bieber siblings. She is the daughter of Jeremy and Chelsey Bieber. Her Instagram account, managed by her parents, lists cheerleading as one of her interests.

In September 2023, she started kindergarten, listing “Baby”—Justin’s 2010 hit—as her favorite song on a school project sign.

While Justin spends most of his time in Los Angeles, where he lives with his wife, Hailey, and their son, Jack, he appears to remain in touch with his siblings. The singer has acknowledged his brother and sisters in past posts and birthday tributes, though he has kept his family life more private in recent years.