Mama Mia! stars and lovers Amanda Seyfried and Dominic Cooper were spotted coming out of Barney's in Los Angeles yesterday afternoon. Perhaps the couple was picking up some last minute items for the Golden Globes award show?  Amanda, 23, and Dominic, 30, later walked the red carpet together.  Amanda's HBO drama about polygamists withs some serious dramz, Big Love, fiiiinally returns this Sunday!