In the pic, which will be displayed on a 90-foot billboard in Times Square, the blonde beauty is hugging her knees and sporting nothing but her tattoos and a huge smile.
"Be comfortable in your own skin, and let animals keep theirs," the caption reads.
"I would like to say I've always been fur-free," P!nk says. "Unfortunately, I went through a selfish phase and wore fur on a couple of occasions. But I wised up and now boycott fur completely."
"I wish everyone was forced to learn the horrors that these animals go through for fashion trends," she adds. "I hope fur-wearers get bitten in the ass by the same kind of animal they wear on their back."
The "Try" songstress follows in the footsteps of fellow animal rights activist celebs like Khloe Kardashian, Joanna Krupa, Wendy Williams, and Olivia Munn, who have all stripped down for the cause.
Click "Launch Gallery" above to see all the stars who've posed in the buff for PETA ... there's a lot of 'em!