pado taun 2004, Seyfried mamulai debut filmnyo dalam film komedi remaja Mean Girls. peran bantuannyo barupo film independen, sarupo drama Nine Lives (2005) jo drama kriminal Alpha Dog (2006). inyo juo mampunyoi peran bakarajo di serial televisi UPN Veronica Mars (2004<unk>06). antaro taun 2006 jo 2011, Seyfried baperan dalam serial drama HBO Big Love. inyo juo baperan dalam film musikal Mamma Mia! (2008) dan maulang perannyo dalam sekuelnyo, Mamma Mia! Here We Go Again (2018).
Cewek-Cewek Jahat