The cast for the final Twilight film, Breaking Dawn, is beginning to take shape, with multiple sources reporting today on a couple of pretty big roles that may have found a home. First up, Entertainment Weekly tells us that 9-year-old newcomer Mackenzie Foy is likely to play at least one version of Renesmee, who's the child of Edward and Bella. We say one version, because at this time we're not sure how many different Renesmees will be featured in the film considering the character's rapid growth throughout the book. EW does say, however, that digital effects will be used to age up or down, similar to the way it was done for Brad Pitt in The Curious Case of Benjamin Button. Chances are you're not familiar with Foy, who's chalked up a few lesser-known TV credits and is said to be a kids' fashion model … so break out that Gap circular!