Julia Stiles: Biography, Career, Net Worth, and Current Projects

Few teen films from the late 90s still spark the same affection as 10 Things I Hate About You – and Julia Stiles, as the sharp-witted Kat Stratford, was a big reason why. But the actress who started on New York stages at age 11 has quietly built a career that goes far beyond one iconic role.

Born: March 28, 1981 ·
Birthplace: New York City, New York, USA ·
Heritage: Irish, English, German ·
Occupation: Actress, director ·
Children: 2 ·
Net worth: Not publicly disclosed

Nine key facts about Julia Stiles, from her full name to her most recent projects, show a steady career with a few surprises.

Is Julia Stiles Irish?

What is Julia Stiles’ heritage?

• Julia Stiles is of Irish, English, and German descent (Wikipedia (biographical encyclopedia)).
• Her mother Judith O’Hara and father John Stiles raised her on the Upper West Side of New York City (History Tools (biography aggregator)).
• Her full name is Julia O’Hara Stiles — the O’Hara reflects her Irish maternal lineage (IMDb (film database)).

Does Julia Stiles have a twin sister?

• No. She is the eldest of three children, but none are twins (Wikipedia (biographical encyclopedia)).

The pattern: her Irish heritage is real, but the twin rumor is a persistent internet myth with no basis in any verified source.

What happened to Julia Stiles’ career?

What are Julia Stiles’ most famous roles?

• Breakthrough role: Kat Stratford in 10 Things I Hate About You (1999) (Wikipedia (biographical encyclopedia)).
• Nicky Parsons in the Bourne trilogy: The Bourne Identity (2002), The Bourne Supremacy (2004), The Bourne Ultimatum (2007) (Wikipedia (biographical encyclopedia)).
• Lila Tournay in Dexter (2010) (Wikipedia (biographical encyclopedia)).
• Other notable films: Save the Last Dance (2001), Mona Lisa Smile (2003) (IMDb (film database)).

How did Julia Stiles’ career decline and revive?

• After the early 2010s, Stiles took on fewer high-profile film roles, but she continued working steadily in television (Wikipedia (biographical encyclopedia)).
• She directed the short film Wish You Were Here (2025) (Culture Junction (celebrity profile)).
• Recent TV series include The Mighty Ducks: Game Changers (2021–2022) and The Lake (2022) (IMDb (film database)).

The catch: her career didn’t “decline” so much as shift from blockbuster films to selective TV and indie projects, a deliberate choice she has hinted at in interviews.

Did Julia Stiles have children?

Who is Julia Stiles married to?

• She married Preston J. Cook, a camera assistant, on September 3, 2017 (IMDb (film database)).
• They met on the set of Go with Me in 2015 (Future Student Charleston Southern (educational profile)).

How many children does Julia Stiles have?

• She has two children. Her first son, Strummer Newcomb Cook, was born in October 2017; her second, Keats Lyle Cook, was born in April 2021 (Media Coverage (celebrity news aggregator)).
• Stiles generally keeps her children out of the public eye (TheRichest (celebrity finance site)).

The pattern: while some sources claim three children, the consistent reporting from multiple outlets points to two, with specific names and birth dates.

What is Julia Stiles doing today?

What recent projects has Julia Stiles worked on?

• 2022: Starred in the comedy series The Lake (IMDb (film database)).
• 2021–2022: Recurring role in The Mighty Ducks: Game Changers (IMDb (film database)).
• 2025: Directed the short film Wish You Were Here (Culture Junction (celebrity profile)).

Is Julia Stiles involved in advocacy?

• In 2024, she partnered with Girls Who Code for their first-ever public fundraising campaign, saying she was “thrilled to share something meaningful” (Media Coverage (celebrity news aggregator)).
• She has also supported other causes, including environmental and education initiatives (Wikipedia (biographical encyclopedia)).

The implication: Stiles is using her platform to promote women in tech, a move that aligns with her low-key but purposeful public persona.

Did Heath Ledger get along with Julia Stiles?

Did Julia Stiles and Heath Ledger have a romantic relationship?

• Stiles and Ledger co-starred in 10 Things I Hate About You (1999) and were reportedly close friends during filming (IMDb (film database)).
• Rumors of a romantic relationship have circulated for years, but neither Ledger nor Stiles ever confirmed it (Wikipedia (biographical encyclopedia)).
• Stiles has spoken warmly about Ledger in interviews, describing him as a talented and kind person (Media Coverage (celebrity news aggregator)).

The trade-off: while their on-screen chemistry fueled speculation, the available evidence points to a deep friendship, not a romance.

For fans of 90s teen cinema, Julia Stiles’ journey from Shakespearean-inspired rom-coms to Bourne action and then to advocacy work shows a rare combination of staying power and personal growth. Stiles has built a career that rewards patience over flash.

Frequently asked questions