Amanda Michelle Seyfried (born December 3, 1985) is an American actress and former child model. She is known for her roles in the feature films Mean Girls, Mamma Mia! and Alpha Dog, and in the television shows Veronica Mars and Big Love.

Seyfried was born in Allentown, in the Lehigh Valley region of Pennsylvania. She is a 2003 graduate of Allentown’s William Allen High School and was enrolled at New York City’s Fordham University. As a teenager, she appeared on the cover of three Francine Pascal books.