New Moon's werewolves are likely happy about this!

Christian Serratos, who stars as Angela in the Twilight Saga sequel, went nude for a PETA ad campaign against fur.

The actress, 19, stripped down for the animal rights organization's "Rather Go Naked Than Wear Fur" ad.

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In her ad -- which is set in a dark, misty forest -- Serratos stands naked next to a tree.

"Animals killed for their fur are electrocuted, drowned, beaten and often skinned alive," the ad, which has splatters of blood on it, reads. "Please don't wear fur."

Although she's the youngest celebrity to grace PETA's nude ads, Serratos has joined a growing list of celebrities  -- including Charlize Theron, Eva Mendes, Karina Smirnoff and Roselyn Sanchez -- who have starred in PETA's anti-fur ad campaigns.