Amanda Michelle Seyfried (born December 3, 1985) is an American actress, model and singer. She began her career as a model when she was 11 and her acting career at 15 with recurring parts on the soap operas. Amanda Seyfried made her feature film debut in the 2004 teen comedy film Mean Girls and starred in the musical feature film Mamma Mia! (2008) and reprised her role in the sequel, Mamma Mia! Here We Go Again (2018).