Amanda Seyfried net worth: Amanda Seyfried is an American actress and model who has a net worth of $10 million. Amanda Seyfried is an actress, singer/songwriter and former child model. Amanda Seyfried has earned her net worth through her acting roles in soap operas, films, and television. She began modeling at the age of eleven and acting at the age of fifteen. She was born in Allentown, Pennsylvania on December 3, 1985. One Amanda's big early breaks was as a ditsy high school girl in the comedy "Mean Girls" alongside Lindsay Lohan. She also was a series regular on the HBO polygamy show "Big Love" before pursuing a full time film career.