Liam Hemsworth
The hunky Hunger Games star revealed he's adopted a vegan diet in the November 2015 issue of Men's Fitness magazine.
Beyoncé & Jay Z
The music super stars are going vegan for 22 days ahead of Christmas. Wonder if the healthy eating habits will stick?!
Lea Michele
Not eating any food made from animal products is surely doing the Glee star's body good!
Betty White
If going vegan is all it takes to ensure we'll look as good as Betty White when we're 90, sign us up!!
Brad Pitt
Although Brad's better half was vegan for a long time, Angelina Jolie had to give up the lifestyle because she wasn't getting the nutrients she needed. Brad, on the other hand, looks like he's doin' just fine!
Jessica Chastain
Jessica won PETA's "Sexiest Vegetarian Celebrity" award in 2012. The actress has been a vegetarian for 15 years and a vegan for five.
Bill Clinton
If it was made from an animal—or worse, was one—Clinton isn't putting it in his mouth.
Russell Brand
Another vegetarian convert, Russell announced his move to veganism via his Twitter page, saying, "I'm now vegan, goodbye eggs, hello Ellen."
Alicia Silverstone
The Clueless actress definitely knows a thing or two about eating vegan—in fact, she even started her own website dedicated to the cause.
Olivia Wilde
Olivia recently told Ecorazzi that being a vegan isn't always easy. Fortunately, she has a good support system and had fellow celeb vegans like Alicia Silverstone to help teach her the ropes when she was first getting started.
Mike Tyson
On why he went vegan, the boxer told Ann Currry, "I just threw up the white flag. Too many prison cells, jail, too many lawsuits, too many bankruptcies, too many women, too many venereal diseases, too many everything. I got tired."
Jenny McCarthy
Originally a vegetarian, the smokin' hot model announced her transition to veganism on an episode of The Rachael Ray Show in 2009.
Alec Baldwin
Alec is feeling so good on his vegan diet, he's working out like an animal—he just won't eat one!
Ellen DeGeneres & Portia de Rossi
This celeb couple took the plunge to go vegan together. Ellen and Portia told Rachael Ray that they made the switch after reading the book Skinny Bitch.
Russell Simmons
After turning to veganism, Simmons opened up to fellow vegan Ellen Degeneres in a passionate letter that he hoped would encourage others to adopt the lifestyle.