The actress has posed completely nude on a bed of leafy greens to promote vegetarianism in PETA's sexy new Eat Green To Go Green campaign.
Edelstein had no qualms about stripping to show off her toned figure, which she insists is down to the meat-free diet she has followed since she was 15 years old.
She tells Prevention magazine, "I was never a big meat eater - I was always picky. I was raised in a kosher home, and if you're raised with a food restriction, it's not that difficult to have another kind of food restriction.
"At some point, I had a dream that I was eating chicken. But in the dream, I understood that it was actually miniature human legs and arms. My brain was connecting muscle and bone to another animal. Once I had made that connection, it just wasn't something I wanted to eat."
Edelstein admits she also posed for PETA to highlight the effects of the meat industry on the environment.
She adds, "The meat industry is really toxic to the environment. The cattle industry - besides the fact there are a lot of cruel things happening... the manure is extremely toxic. We just need to pull back as a culture as much as we can."