Mia Maestro, Christian Camargo, Casey LaBow and MyAnna Buring have joined the cast of Summit Entertainment’s “The Twilight Saga: Breaking Dawn Part 1.”

The four thesps will play members of the Denali Coven, considered cousins of the Cullens and the only other “vegetarian” vampires.

It had been announced earlier in the week that Maggie Grace will also play a member of the coven.

Based on the book by Stephenie Meyer, the fourth chapter in the “Twilight” series will be broken up in two parts, with the first bowing on Nov. 18, 2011. The book follows mortal Bella as she marries the vampire Edward and gives birth to a half-human, half-vampire baby daughter.

Bill Condon will helm, with Melissa Rosenberg penning the script. Meyer will produce along with Karen Rosenfelt and Wyck Godfrey.

Camargo was last seen in “The Hurt Locker,” while Buring is best known as one of the stars of “The Descent.”

Maestro’s credits include “Poseidon” and “Alias,” while LaBow was recently seen in “Skateland.”