By now, most Twilighters know more about Kristen Stewart, Ashley Greene, Nikki Reed and the others than their own mothers. So, with filming of "Eclipse" finally under way in Vancouver, the fanbase is excited to welcome some new blood into the vampire franchise.

With that in mind, we present this handy guide to five key actresses joining the "Twilight" saga for its third installment. Much like Bella, we can all look forward to making new friends in Forks, and tomorrow we'll take a look at the new "Eclipse" men. But to be courteous, here are the ladies first.

Actor: Catalina Sandino Moreno

Character: Maria

The Lowdown: Fan-favorite Jackson Rathbone has already expressed excitement over the fact that his role as Jasper Hale will be expanded greatly for the third "Twilight" film. Oscar-nominee Moreno may no longer be "Full of Grace," but will now play a very different Maria. Described in Stephenie Meyer's pages as being petite with a soft voice, Maria is the woman who turned Jasper into a bloodthirsty immortal when he was 20 years old in 1863. Her inclusion will play a major role in the young vampire threat that emerges throughout "Eclipse" and the likely-to-film-someday "Breaking Dawn."

Actor: Julia Jones

Character: Leah Clearwater

The Lowdown: The only female werewolf in the history of the Quileute tribe, the part of Leah was targeted soon after the success of the "Twilight" movie as a star-making role for a young actress — and sure enough, names like Vanessa Hudgens, Q'Orianka Kilcher and Brenda Song were rumored for months. Instead, director David Slade chose 28-year-old relative newcomer Jones ("Hell Ride") — a former model for the Gap, Esprit, L'Oreal and other national brands. We can look forward to seeing her transform in "New Moon" alongside her brother Seth (BooBoo Stewart), and a problematic love triangle leaves her bitter and eager to tease Jacob about his own love triangle.

Actor: Bryce Dallas Howard

Character: Victoria

The Lowdown: Technically, she isn't a new character — in fact, the vampire Victoria is one of the most pivotal figures in the movie franchise. But in case you've been trapped in a cave for the last few months, sealed off from all mankind, we thought we'd mention that Bryce Dallas Howard replaced Rachelle Lefevre in "Eclipse" after the actress was unceremoniously dismissed from the franchise — a move that spurned a headline or two. The Golden Globe nominee certainly has not only the appropriate hair color, but the acting chops to go along with it — and has already begun to bond with her castmates. But without a doubt, all eyes will be on Bryce to see if she can fill Rachelle's sizable shoes.

Actor: Tinsel Korey

Character: Emily

The Lowdown: Named after Stephenie Meyer's sister, Emily is Leah Clearwater's second cousin and the aunt to Claire — a character who will emerge mainly in "Breaking Dawn." Korey, an actress best known for the Canadian TV crime drama "Rabbit Fall," is expected to dress down her beauty with prominent scars in "Eclipse." The markings on Emily's face and arm serve as constant reminders of the short temper belonging to Sam Uley (Chaske Spencer), as well as the guilt he feels for harming his fiancée. Actor: Jodelle Ferland

Character: Bree

The Lowdown: Those who expect "30 Days of Night" filmmaker Slade to bring the blood for his "Twilight" adventure know that a good amount of it could possibly revolve around the violent newborn vampire Victoria creates in an attempt to avenge the death of James (Cam Gigandet) in the first flick. The 14-year-old Ferland appeared with Kristen Stewart previously in the 2007 horror flick "The Messengers," and has been acting since she was 5 years old. Soon fans can look forward to her shrill voice, special link with Carlisle and eventual fall-out with Jane (Dakota Fanning) and the Volturi.

Check out everything we've got on "The Twilight Saga: Eclipse."

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