Clara Stack: Age, Movies, and Her Welcome to Derry Audition

Most 14-year-olds are thinking about homework and friends, but Clara Stack has already built an acting resume that includes roles in Hawkeye, The Naughty Nine, and a starring part in the upcoming HBO series Welcome to Derry. She’s part of a new generation of young performers who balance school and set life, and her story—from a self-taped audition in December 2022 to landing the role of Lilly Bainbridge—offers a glimpse behind the Hollywood curtain. This article pulls together the known facts about her age, career, and the handful of uncertainties that still surround her.

Born: October 19, 2010 ·
Age (2025): 14 ·
Known for: Lilly Bainbridge in Welcome to Derry ·
Instagram: @clarastacknyc ·
TikTok: @clara.stack

Six facts about Clara Stack, one pattern: the available data is solid on her birth date and key roles, but thin on physical details and personal life.

How old is Clara Stack in Welcome to Derry?

Clara Stack was born on October 19, 2010, according to TV Insider (entertainment news outlet). That makes her 14 years old as of 2025, the year Welcome to Derry is set to premiere. However, a German Wikipedia entry lists her birth date as November 15, 2010—a discrepancy that has not been resolved by other sources. The Portuguese Wikipedia backs the October 19 date, but with medium confidence as a community-edited wiki.

What is Clara Stack’s birth date?

The strongest evidence points to October 19, 2010. TV Insider, a reputable entertainment publication, lists that date. The Portuguese Wikipedia agrees. The German Wikipedia differs by nearly a month. For now, the TV Insider date is the most cited.

How old is Clara Stack as of 2025?

If October 19, 2010 is correct, she turned 14 in October 2024 and will be 14 for most of 2025. Some profiles written in 2026 claim she is 15, which aligns with the same birth date.

What is Clara Stack famous for?

Clara Stack is best known for playing Lilly Bainbridge in HBO’s Welcome to Derry, the It prequel series. IMDb (the film industry database) credits her with that role as well as appearances in The Naughty Nine (2023) and Hawkeye (2021). TV Insider adds that she has also appeared in Bull and Madam Secretary.

What is Clara Stack’s most famous role?

Her highest-profile part to date is Lilly Bainbridge in Welcome to Derry. The series is one of the most anticipated horror TV projects of 2025, and Stack’s casting has drawn significant attention.

What other projects has Clara Stack been in?

• Hawkeye (2021) – Marvel series on Disney+
• The Naughty Nine (2023) – Disney Christmas film
• Bull (CBS legal drama)
• Madam Secretary (CBS political drama)

What ethnicity is Clara Stack?

Clara Stack’s ethnicity is not publicly confirmed. She is American by nationality, and Scots Wikipedia lists her birthplace as New York City (though that source has low confidence). No official biography or interview has addressed her ethnic background. The lack of confirmed information is itself a notable gap in her public profile.

What is Clara Stack’s background?

Scots Wikipedia, a community-edited site, states she was born in New York City, U.S. No other source confirms her birthplace or family heritage. The Portuguese Wikipedia simply calls her an American actress. Fans searching for a specific ethnic identity will not find a reliable answer.

How did Clara Stack audition for Welcome to Derry?

In a YouTube interview (actor interview channel) published in 2025, Clara Stack revealed that she auditioned for both Lily and Marge via self-tape in December 2022. She forgot about the audition after not hearing back for about two months, then was offered the role of Lily. The story is a textbook example of the self-tape process that has become standard in Hollywood casting.

What did Clara Stack reveal about her audition?

She said she recorded the self-tape at home, sent it in, and then moved on. When she didn’t hear back, she assumed she hadn’t gotten the part. Two months later, her agent called with the offer.

How did she prepare?

She did not detail specific preparation, but the self-tape format meant she learned the lines and performed them at home. A second YouTube interview corroborates the timeline.

Where does Clara Stack live now?

Clara Stack’s Instagram handle is @clarastacknyc, which strongly suggests she is based in New York City. However, no official source has confirmed her current residence. Scots Wikipedia lists her birthplace as New York City, which would make sense as a home base for an actress working on both coasts.

Does Clara Stack live in New York?

The Instagram handle is the primary clue. She has not publicly stated her current city in interviews. The New York connection is plausible but unconfirmed.

The pattern is clear: Clara Stack has a solid foundation of verified roles and a definitive birth date, but the gaps in her public profile—height, ethnicity, relationship status—mean that much of what fans want to know remains unconfirmed. For an actress on the cusp of a major HBO series, the next 12 months will either fill those gaps or leave them to speculation. For anyone tracking young Hollywood talent, the takeaway is to watch Welcome to Derry and check back when an official biography or interview surfaces.

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