Big Love doesn’t premiere til Jan. 10 and we already know who’s not coming back next year: Amanda Seyfried. As first reported on, Seyfried will leave the show at the end of this season to pursue her film career full time. Best known for her role in last year’s blockbuster Mamma Mia!, Seyfried will give up her sixth-month commitment to the award-winning HBO show after her character, Bill Paxton’s eldest daughter Sarah, gets married this year. Seyfried, who appeared in Diablo Cody’s Jennifer’s Body this year, can next be seen in the Liam Neeson/Julianne Moore drama Chloe, Lasse Hallstrom’s Dear John, and Letters to Juliet with Gael Garcia Bernal.