Mackenzie Foy

Mackenzie Foy can't do it all by herself.

This rising star has landed the key role of Renesmee in Breaking Dawn, but viewers will see this daughter of Edward and Bella at various stages of her childhood. Therefore, while Foy will be on screen for a majority of the film, the following young actresses will also take on the role for brief periods of time:

Sierra Pitkin: Played a role in Juno and a bit part on Fringe. Will provide the oldest body for Mackenzie Foy's head in Breaking Dawn.

Little by little, Summit Entertainment is revving up its publicity for Breaking Dawn.

First, we were treated to the hottest still image in Twilight Saga history. Then, the studio released the official logo for this installment of the franchise.

Now, producers have unveiled a promotional photo of Mackenzie Foy, the 10-year old actress who will portray Edward and Bella's half-human spawn, Renesmee. The burgeoning star has appeared in FlashForward and Hawaii Five-O, but Breaking Dawn will mark her big screen debut. Expect it to be a doozie.

Mackenzie Foy is only nine years old. But we hope she's ready for the craziness that surrounds the Twilight Saga.

Numerous sources confirm that Foy has landed the vital Breaking Dawn role of Renesmee, the immortal child spawned by Edward and Bella in the final installment of this beloved franchise. The young actress has guest-starred on such shows as FlashForward and 'Til Death and is pictured here:

How will the actress portray a character who ages many years in a short period of time? It's unclear, but look for digital effects to come in handy. For now, we're simply asking fans to sound off: What do you think of this casting?

You can also chime in on the casting of Maggie Grace, who will play Irina in Breaking Dawn. Does she fit the Twilight mold?