Julia Stiles Children: Inside Her Family Life With Husband Preston J. Cook and Their Three Kids

Julia Stiles grew up in front of movie audiences, but when it comes to her own children, she has taken a much more private approach. The actress, best remembered by many fans for films such as 10 Things I Hate About You, Save the Last Dance and the Bourne franchise, is now a mother of three.

Stiles shares her children with her husband, Preston J. Cook, a camera assistant whom she met while working on the 2015 film Blackway. Their family includes sons Strummer Newcomb Cook and Arlo Cook, along with a third child whose name and sex have not been publicly disclosed.

For Stiles, motherhood has become an important part of life away from acting and filmmaking. She occasionally discusses her children in interviews, but she and Cook have deliberately kept most details about them outside the public spotlight.

How Many Children Does Julia Stiles Have?

Julia Stiles has three children with Preston J. Cook.

Their oldest child, Strummer Newcomb Cook, was born in October 2017. The couple welcomed their second son, Arlo, in January 2022. Stiles later revealed that she had quietly welcomed a third baby in 2023.

The arrival of her third child was particularly private. Instead of announcing the pregnancy and birth as they happened, Stiles waited months before publicly revealing that her family had expanded.

That approach fits with the way she and Cook have handled parenthood from the beginning. Stiles may occasionally offer small glimpses into family life, but her children are not a major part of her public identity.

Strummer Newcomb Cook

Strummer Newcomb Cook is Julia Stiles and Preston J. Cook’s oldest child.

He was born on October 20, 2017, just weeks after his parents married. Stiles announced his arrival later that year, sharing the news while thanking the medical team that had helped her family.

Becoming a mother marked a significant change in Stiles’ personal life. By then, she had already spent decades working as an actress, having started performing professionally when she was young herself.

Strummer has occasionally been mentioned when Stiles discusses balancing her career with motherhood, but his parents have generally avoided placing him directly in the entertainment spotlight.

As he has grown older, Stiles has continued to maintain that boundary. Rather than building a social media presence around her son, she has kept most details about his childhood and everyday routine private.

Arlo Cook

Stiles became a mother for the second time when she welcomed Arlo in January 2022.

She shared the news publicly after his arrival and introduced his first name, Arlo, to her followers. As with Strummer, however, she did not begin regularly sharing photographs or extensive personal information about him.

The age difference between Strummer and Arlo means Stiles has experienced different stages of parenting at the same time. Her older son was already several years into childhood when she returned to caring for a newborn.

Stiles has spoken about how parenthood affects both her daily life and professional decisions. Acting can involve lengthy shooting schedules and considerable travel, making family support particularly important.

Cook’s career behind the camera also means both parents understand the unusual demands of film and television production.

Julia Stiles Quietly Welcomed Her Third Child

The biggest surprise surrounding Julia Stiles’ children came when she revealed that she and Cook had welcomed baby number three.

In an interview published in 2024, Stiles disclosed that she had given birth approximately five months earlier. Unlike the arrivals of Strummer and Arlo, the third pregnancy had largely remained outside public attention.

Stiles did not reveal the baby’s name or sex, maintaining another layer of privacy around her youngest child.

Her decision was consistent with the boundaries she had already established around her family. Although fans naturally have an interest in the actress’ personal life, Stiles has never suggested that becoming a parent means every detail about her children needs to be publicly available.

As a result, the third child remains the most private member of the family.

Who Is the Father of Julia Stiles’ Children?

All three of Julia Stiles’ children are shared with her husband, Preston J. Cook.

Cook works behind the scenes in the entertainment industry as a camera assistant. That has given the couple something important in common because both understand the demands and unpredictability that come with working on film productions.

Their relationship reportedly began after they met while working on Blackway. Stiles starred in the thriller alongside Anthony Hopkins and Alexander Ludwig, while Cook worked as part of the production crew.

The professional meeting eventually developed into a relationship, and they became engaged in 2015.

Stiles and Cook married in September 2017 while she was expecting their first child. Rather than organizing an enormous celebrity wedding, they opted for a more intimate celebration.

Strummer arrived the following month, beginning a new chapter for the couple.

Motherhood Changed Julia Stiles’ Life

Stiles has been working professionally since childhood, so becoming a parent gave her a very different perspective on growing up.

She began acting at a young age and became widely recognizable as a teenager and young adult. Her breakthrough years included performances in 10 Things I Hate About You and Save the Last Dance, followed by roles in projects ranging from Mona Lisa Smile to the Bourne films.

After having children, her career did not disappear, but the way she approached work naturally evolved.

Parenthood became another consideration when accepting projects, traveling and spending extended periods on sets. Stiles has also expanded her career behind the camera, moving into directing in addition to acting.

Her feature directorial debut, Wish You Were Here, was released in 2025. Interestingly, Stiles has spoken about filmmaking and motherhood as two demanding creative experiences that became closely connected during this stage of her life.

Her Children Support Her Career

Stiles’ family has remained an important source of support as she continues taking on new professional challenges.

In 2026, the actress joined Season 35 of Dancing with the Stars, adding an entirely different type of performance to a career already spanning film, television, theater and directing.

She has discussed how Cook and their three children have supported her during the experience. Taking part in an intensive competition while raising three young children requires considerable coordination at home.

It also offers her children a chance to see their mother doing something very different from the movie roles audiences normally associate with her.

Despite sharing occasional stories about family support, Stiles continues to protect the more personal parts of her children’s lives.

Why Julia Stiles Keeps Her Kids Private

Julia Stiles’ approach to her children reflects a broader separation between her public career and private family life.

Strummer and Arlo’s names are known, but comparatively little about their daily lives has been made public. Her third child’s identity has been protected even more closely, with Stiles choosing not to reveal either a name or sex.

This means there are natural limits to what is reliably known about Julia Stiles’ children.

What is clear is that family has become a central part of the actress’ life. She and Preston J. Cook have built their household while both maintaining connections to the entertainment industry, one primarily in front of and increasingly behind the camera, and the other working behind the scenes.

For anyone searching for Julia Stiles’ children, she is a mother of three. Strummer Newcomb Cook arrived in 2017, Arlo followed in 2022, and their youngest sibling was welcomed privately in 2023. Beyond those basic details, Stiles appears determined to give her children something that can be difficult to find in Hollywood: room to grow up without constant public attention.