Ne-Yo is making it a happy New Year for animals: The rapper has resolved to go vegan in 2013. When Ne-Yo first tweeted his New Year's resolution, he deemed it a discipline test. But after he learned about the cruelty of the meat and dairy industries, he said that there was "much more meaning to it." PETA sent him vegan dining expert chef Tal Ronnen's The Conscious Cook: Delicious Vegan Recipes That Will Change the Way You Eat, a vegetarian/vegan starter kit, and fellow music legend Paul McCartney's meat industry exposé, "Glass Walls." 

Ne-Yo has been keeping his Twitter followers up to date on his progress and has received an outpouring of support, as have animals:

Maybe Ne-Yo will give Anderson Cooper the inspiration that he needs to help him make the switch. When Anderson invited vegan Alan Cumming onto his show, the pair noshed on meat-free chicken wings and Anderson talked about his vegan aspirations.

PETA friend Kelly Osbourne says it was her boyfriend, vegan chef Matthew Mosshart, who helped her drop pounds and feel better. "That's because he cooks for me! He's a vegan chef so he makes sure I eat healthily," she says. "I'm happy with how I look now."

Emma Stone and Andrew Garfield are happy with how their family looks now, with the addition of their new rescued dog, Ren. They took the pup in as foster parents, but it took the couple only a few days to make it official. PETA sent Ren a homecoming present of treats and toys.

To keep up with what all your favorite stars are doing for animals, follow @PETA on Twitter. 

From Hollywood to Wimbledon, it's clear: Everybody's going vegan.

Mischa Barton said she dropped weight when she dropped animal products, and vegetarian Alan Cumming was inspired by vegan Mike Tyson to do all animals a solid and go vegan too.

Venus Williams' new vegan diet is helping her manage her Sjögren's syndrome. Little sis Serena Williams followed in Venus' tennis shoes and went vegan as well. And WWE champ CM Punk made it his New Year's resolution to C Meat out the door.

Photo: Robert Sebree • Makeup: Steven Sollitto

Roselyn Sanchez asked people not to light fireworks, which terrify animals and kill birds, on New Year's Eve. Then she started her year off with a bang, welcoming a new little animal advocate, daughter Sebella Rose Winter, to her family.

UFC Fighter Dan Hardy is welcoming fellow fighter Matt Hughes to the ring to pick on someone his own size. Hardy called Hughes out for hunting for sport, tweeting, "There is no justification for what he does. I fight against other people that enjoy fighting also. Shooting animals for fun isn't sport and it certainly isn't cool."

What is cool is keeping up with what  celebs are doing to help animals by following PETA on Twitter.