The cast of Beautiful Creatures has been growing seemingly exponentially in the past couple weeks. It began when Viola Davis, nominated for Best Actress this year for her performance in The Help, signed on and just yesterday it was revealed that Jack O’Connell and Alice Englert have joined on. Today they've added a two-time Oscar winner.

Emma Thompson, according to THR, is the newest actress to join the ranks of Beautiful Creatures. The film is based on the novel by Kami Garcia and Margaret Stohl and is being both written and directed by Richard LaGravanese. Described as a "supernatural coming-of-age story," the story follows a young boy and girl who investigate a curse that has been haunting the girl's family for generations. Thompson is set to play a dual role in the movie, portraying the character of Mrs. Lincoln - described as being "small town religious firebrand" - and the witch that possesses Mrs. Lincoln, named Sarafine. The book is from a series called The Caster Chronicles and the fourth book is due out this year.

Thompson has a number of titles due out this year including Barry Sonnenfeld's Men in Black III (in which she plays the new head of MIB), Terrence Malick's Voyage of Time (which she is narrating), Pixar's Brave (where she is voicing the mother of the main character), and Richard Laxton's Effie (based on an original script she wrote).

While I can't say I've seen anything from O'Connell or Englert, having Davis and Thompson in supporting roles is a good sign for any project. Casting seems to be developing quickly, so keep checking back for more about Beautiful Creatures.