Mckenna Bridger is an American actress from Redondo Beach, California. She is best known for her work in Stranger Things (2016-2025) , Three Months to Break Your Heart (2025-) , and Disclosure Day (2026) , among others. Bridger began her professional acting career in late-2024, and soon made her on-screen debut in the final season of the popular TV series The Umbrella Academy (2019-2024) , playing the minor role of Holly. In 2025, she later starred as Violet in the psychological thriller Nightmare (2026) , taking on her first leading role. Just a month later, she landed her breakthrough role in a vertical drama as Grace Hayes, the younger sister to Summer Hayes, in Three Months to Break Your Heart (2025-) . Mckenna has joined the cast of the Untitled Jack Ryan film (2026), playing the role of Sally Ryan, the daughter of Jack Ryan. Before stepping into the entertainment industry, she spent most of her youth exploring a wide range of creative and athletic pursuits. She trained in dance, gymnastics, figure skating, and soccer, which helped her develop confidence, discipline, and a strong sense of performance. Her passion for acting began early on, appearing in multiple school plays and community theater productions. While in high school, she performed in stage versions of Herakles and Romeo and Juliet, experiences that strengthened her love for storytelling and helped prepare her for a future in screen acting. In addition to acting, she has worked behind the camera as a production assistant and served as a stand-in for the character Max Mayfield on the Netflix series Stranger Things (2016-2025) . Bridger also served as a co-writer and producer on Nightmare (2026) , contributing to both the creative and production sides of the project, which expanded her skills within multiple areas in filmmaking.