Amanda Seyfried Cast as Sophie in Mamma Mia! Film?

The Internet Movie Database credits Mean Girls star Amanda Seyfried as having been cast as bride-to-be Sophie in the upcoming film version of Mamma Mia!.

Seyfried would be joining the previously announced Meryl Streep as Donna and Pierce Brosnan as Sam Carmichael.

Best known for playing the role of ditzy Karen Smith in Mean Girls, Seyfried's other film credits include Gypsies, Tramps and Thieves, Alpha Dog, American Gun and Nine Lives.  Her TV credits include "Veronica Mars," "CSI: Crime Scene Investigation," and "Big Love," on which she plays Sarah Henrickson.

The film begins shooting on June 25, 2007 in London and Greece will be directed by Phyllida Lloyd, who directed the stage show in New York and London, with a screenplay by the stage show's bookwriter Catherine Johnson.

The film will be produced by Judy Craymer of Littlestar films, with Gary Goetzman, Tom Hanks, Rita Wilson, Benny Andersson and Bjorn Ulvaeus executive producing. It's set to start filming this summer.

Mamma Mia! is an international hit that has run for over 2,200 performances at Broadway's Winter Garden Theatre. "Inspired by the story-telling magic of ABBA's timeless songs, writer Catherine Johnson's sunny, funny tale of family and friendship unfolds on a Greek island.  On the eve of her wedding, a daughter's quest to discover the identity of her father brings 3 men from her mother's past back to the island they last visited 20 years ago," state press notes on Mamma Mia!, which features in its score songs such as "Dancing Queen"; "The Winner Takes It All"; "Money, Money, Money" and "Take A Chance on Me."

Visit www.mamma-mia.com for more information.