Robert Pattinson will have new blood in Twilight movie Eclipse

Three actors stand on the cusp of joining Robert Pattinson and Kristen Stewart squeal-filled future, one where they will forever be known as those dudes who were in that movie about uptight vampire boyfriends.

Yes, the third instalment of the Twilight franchise, Eclipse, is casting, E! News reports. And before the sparkle can fade from the just-released New Moon trailer, casting agents are on the prowl for three major roles.

First up is the brother/sister werewolf duo of Seth and Leah Clearwater.

According to E!'s insider, the production is looking for First Nations actors to fill both roles.

Also up for grabs is the part of Riley, "a handsome, blond, clean-cut college boy who falls victim to Victoria."

Filming on Eclipse is scheduled to begin in Vancouver in a few months time.

New Moon, the first Twilight sequel, is due in theatres this November.