Brian Bowen Smith/PETA

This is Alicia Silverstone laid bare.

Standing au naturel in a lush green forest, the actress strips for a new PETA campaign that proclaims, “I’d Rather Go Naked Than Wear Wool. Wear Vegan.” Celebrity photographer Brian Bowen Smith shot the ad, which will debut near Times Square in New York City later this week.

Silverstone has supported PETA since the ’90s and is part of a long list of celebrities—including Pamela Anderson, Taraji P. Henson, Khloe Kardashian, Eva Mendes, Olivia Munn, Pink and Penélope Cruz—who have modeled in the buff to promote kinder wardrobe choices.

“Wool in general has not been thought about by many, many people. It’s just not something that’s really brought to their attention,” Silverstone says. “The biggest thing that people always say to me is, ‘Oh, but they just shear the sheep; they don’t kill the sheep.’ Shearing isn’t like, ‘Oh, let me just take your hair off because you need to give me your coat.’ It’s not like that.”

The abuse these animals suffer is far worse, according to Silverstone. “It’s like on the slaughterhouse floor where there’s a conveyer belt and it’s going that fast. It’s just so fast, the shearing process. They’re cut. They’re harmed. They get very seriously wounded, and there’s no care for them when they are wounded. It’s just, ‘Move onto the next.’ These are not creatures to the people who are doing this; they’re just objects,” she says. “When the sheep are no longer useful, they’re killed. So, there is no happy place that they get to go for being a wool sheep.”