Jemima West cast as Isabelle Lightwood in 'City of Bones'

Cassandra Clare, author of The Mortal Instruments, The Infernal Devices, and the upcoming The Dark Artifices, has announced via her Tumblr that Jemima West has been cast as Isabelle Lightwood in the film adaptation of her bestselling novel, City of Bones. Clare also announced that Alec Lightwood, Isabelle's brother, has also been cast, but that he is an extremely well-known British actor, but has to be kept secret for a while. Clare says that West really captured Isabelle's 'toughness' in her audition, so we're glad to see that's presumably got both the personality and the looks down!

What are your guys' thoughts on Jemima West? We've never heard of her before, so we're glad that we're getting this fresh talent in; no prior judgments or criticisms towards her whatsoever! Let us know in the comments below, and stay tuned for Alec's casting choice!