5 Surprising Facts About Jonah Hill's Partner, Olivia Millar: The Private Life Of The New Mother

The question of "Who is Jonah Hill's wife?" has been a frequent search query for fans of the Oscar-nominated actor, but the most current information as of December 2025 reveals a focus on long-term partnership and new parenthood, not a formal marriage. The Superbad star is currently in a committed relationship with his girlfriend, Olivia Millar, with whom he has embraced a notably private family life, especially following the birth of their first child in May 2023. Their relationship marks a significant, mature chapter for Hill, who has consistently prioritized his mental health and personal boundaries in recent years, making details about his partner and family all the more intriguing.

The couple's journey, which began quietly in the summer of 2022, has been defined by a shared commitment to privacy, a stark contrast to the typical Hollywood spotlight. While not officially his "wife," Olivia Millar is the woman at the center of Jonah Hill's life, and her background—from her roots in the fashion world to her own famous family connections—is fascinating. This deep dive uncovers the most fresh and unique details about the woman who has transitioned the celebrated actor from the "Wolf of Wall Street" to a first-time father.

Olivia Millar: The Private Profile of Jonah Hill's Partner

Olivia Millar is a figure who maintains a low profile, even while being the partner of a major Hollywood star. Her professional background is rooted in the fashion industry, and she comes from a family with established connections in the world of modeling.

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• Full Name: Olivia Millar
• Current Status: Partner of Jonah Hill
• Relationship Start: Romantically linked in August/September 2022
• Profession: Womenswear Designer / Fashion Professional
• Education: Studied Fashion Promotion at the Manchester Fashion Institute
• Family Connection: Daughter of 1980s top model Esmé Marshall
• Children: Welcomed first child with Jonah Hill in May 2023
• Residence: Los Angeles, California (Assumed)

The Relationship Timeline: From Malibu Stroll to New Parents

Jonah Hill and Olivia Millar's relationship has been intentionally kept out of the public eye, yet key milestones have marked their progression from new couple to parents.

A Quiet Beginning (Late 2022)

The first public sighting of the couple occurred in August 2022, when they were photographed together in Malibu, sparking initial romance rumors. Following this, they were also spotted in Santa Barbara in September 2022. Their early appearances suggested a shared interest in a relaxed, low-key lifestyle, often seen enjoying casual outings and coordinating colorful looks.

The Pregnancy Announcement and Public Speculation (Early 2023)

Speculation about an impending arrival began in early 2023 when Millar was photographed, with sources later confirming that the couple was expecting their first child. This news came as a surprise to many fans, given the relative newness and privacy of the relationship, but it solidified their commitment to one another.

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Welcoming Their First Child (May 2023)

In May 2023, representatives for the actor confirmed that Jonah Hill and Olivia Millar had welcomed their first baby. This exciting news transitioned the You People actor into the role of "Superdad." In keeping with their private nature, the couple has chosen not to disclose the baby's gender or name to the public, focusing instead on enjoying this new chapter of parenthood away from the media scrutiny.

The Fashion World Connection: Olivia Millar's Career and Family

Unlike some previous partners of the actor, Olivia Millar has a professional identity tied to the creative world but distinct from Hollywood acting. Her background offers a unique perspective and a strong foundation in the fashion industry.

Daughter of a Modeling Icon

One of the most surprising facts about Olivia Millar is her lineage: she is the daughter of Esmé Marshall, a top model who was prominent in the 1980s. Marshall was a fixture in high-fashion campaigns and magazines during that era, providing Millar with a unique upbringing steeped in the aesthetics and business of style. This connection to a well-known figure from the fashion world adds a layer of topical authority and interest to her profile.

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A Career in Design and Promotion

Olivia Millar has carved out her own path within the fashion realm. She is recognized as a womenswear designer, with a portfolio showcasing her specialization in print design, including ready-to-wear loungewear, pyjamas, and swimwear. Her education at the Manchester Fashion Institute, where she studied fashion promotion, further highlights her skills in marketing, branding, and content creation within the industry. This creative and business-savvy background suggests a partner who is grounded and focused on her own career.

Jonah Hill's Past Relationships and Focus on Mental Health

To understand the significance of his current relationship with Olivia Millar, it's helpful to look at Jonah Hill's romantic history and his public shift toward prioritizing his private life and mental well-being.

Previous Engagements and Breakups

Before his relationship with Millar, Hill was notably engaged to Gianna Santos, a digital fashion guru. Their engagement, which was confirmed in 2019, was later called off. Hill also had a high-profile relationship with surfer Sarah Brady, which ended prior to him being spotted with Millar in August 2022.

The Commitment to Privacy

In 2021, the actor made a public statement declaring that he would no longer promote his film projects in person, citing a long-standing struggle with anxiety attacks exacerbated by media appearances. This decision, detailed in his documentary Stutz, underscores his commitment to mental health and maintaining a strong boundary between his professional and personal life. His relationship with Olivia Millar, which has remained intensely private, aligns perfectly with this new, healthier approach to life. The couple’s choice to keep their baby’s name and gender private is a clear extension of this desire for a peaceful, protected family life, a decision that is fully supported by his famous sister, actress Beanie Feldstein, and his close circle.