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Katherine Mallen Kupferer

Katherine Mallen Kupferer

Born to theatrical parents, Katherine Mallen Kupferer made her professional stage debut in Chicago Shakespeare Theater's acclaimed production of Gypsy and her major motion picture debut in Steve McQueen's Widows. Most recently, she can be seen as Gretchen in Lionsgate's long-anticipated film adaptation of Judy Blume's beloved classic Are You There God, It's Me, Margaret.

Filmography
Mouse poster
Mouse
2026 • Minnie Dunn
They Rescue Horses, Don’t They? poster
They Rescue Horses, Don’t They?
2025 • Aubrey
Ghostlight poster
Ghostlight
2024 • Daisy
Are You There God? It's Me, Margaret. poster
Are You There God? It's Me, Margaret.
2023 • Gretchen Potter
Widows poster
Widows
2018 • Gun Daughter
Fools poster
Fools
2016 • Vera’s daughter