Most Beautiful 2009

AMANDA SEYFRIED, 23

She starred opposite Meryl Streep and Pierce Brosnan in the big-screen adaptation of Mamma Mia! and plays eldest daughter Sarah in HBO's Big Love. But this Allentown, Pa., native is most recognizable from her ditzy turn in 2004's Mean Girls – a role nothing like herself. "There are so many starlets out there who are totally vanilla, totally prefab, and totally trained," Diablo Cody, who wrote Seyfried's upcoming film Jennifer's Body, told Teen Vogue. "Amanda is not only immensely talented but very real."