Amanda Michelle Seyfried ( SY-fred; born December 3, 1985) is an American actress. Her accolades include a Primetime Emmy Award and a Golden Globe Award, as well as a nomination for an Academy Award. Named one of the 100 most influential people in the world by Time in 2022, her films as a leading actress have grossed over $2.4 billion worldwide. Seyfried began acting at age 15, with recurring roles on the soap operas As the World Turns and All My Children. In 2004, she transitioned to film acting with her breakthrough role as Karen Smith in the cult classic teen comedy Mean Girls. She found further success with leading roles in the musical Mamma Mia! (2008), the horror comedy Jennifer's Body (2009), the romance drama Dear John (2010), the sci-fi action film In Time (2011), and the psychological thriller The Housemaid (2025). Seyfried expanded into dramatic roles with performances as Cosette in Les Misérables (2012), Linda Lovelace in Lovelace (2013), a pregnant parishioner in First Reformed (2017), and Ann Lee in The Testament of Ann Lee (2025). For her portrayal of Marion Davies in David Fincher's biopic drama Mank (2020), she earned a nomination for the Academy Award for Best Supporting Actress. On television, she starred as Sarah Henrickson in HBO's Big Love (2006–2011) and Elizabeth Holmes in the Hulu limited series The Dropout (2022), earning a Golden Globe Award and Primetime Emmy Award for Outstanding Lead Actress, among others, for the latter. She has since led the Apple TV psychological thriller The Crowded Room (2023) and Peacock crime drama Long Bright River (2025).