BIG LOVE's Amanda Seyfried, who also appeared in MEAN GIRLS, has joined the JUNO team of Diablo Cody and Jason Reitman's JENNIFER'S BODY, according to THE HOLLYWOOD REPORTER. Seyfried will play Needy, the frumpy best friend of cheerleader Jennifer (Megan Fox, TRANSFORMERS), who must stop her best friend when the popular girl is possessed by a demon and begins to devour the boys in town.

Karyn Kusama is helming the Fox Atomic horror-comedy. Reitman and his Hard C partner Dan Dubiecki, alongside Mason Novick, are the producers.

Filming is set to begin in Vancouver in March.