Has Isabelle Lightwood been cast?

Hi everyone

For those who haven’t checked out the Mortal Instruments: City of Bones movie on IMDb you would see that it’s rumored Adelaide Kane will be Isabelle. Adelaide is an actress from Western Australia and I have to say looks pretty close to what I thought Isabelle would look like. So do you think that she’s Isabelle or do you think it’s just a rumor?