Clara Stack (born 2010) is an American actress, best known for her portrayal as Lilly Bainbridge in the HBO series It: Welcome to Derry.
Early life Clara Stack was born in New York on October 19, 2010. At a young age, she had an interest in acting since she performed in local theatre productions. Her early stage experience helped her to improve her acting talent.
Career Stack made her acting debut on the American drama series Madam Secretary and 2025 Comedy Film, Almost Family. In 2021, she gained wider recognition for portraying the young version Kate Bishop in the Disney+ series Hawkeye.
In 2023, she played the role of Rose in the Disney Original Film The Naughty Nine. In 2025, she portrayed the role of Lilly Bainbridge in the HBO horror series It: Welcome to Derry, a prequel for the movie It (2017) and Stephen King's It universe.
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