How tweet it is: Ricky Martin announced to fans over Twitter that he's gone vegetarian! To help the singer get his bon-bon in top form, PETA sent him a vegetarian/vegan starter kit, copies of "Glass Walls" in both English and Spanish, and a cookbook of vegan recipes for Latin food lovers, Viva Vegan. 

A little birdie also told us that many other celebrities were tweeting for animals this week as well:

Maybe Ricky will start his twin sons out on the healthy veggie path, too? Emily Deschanel is doing just that with her little one, Henry: She told Mother Nature Network, "We are raising Henry vegetarian; he will be mostly vegan and always have a choice in the matter, but we will educate him about why we make the choices we do with our food." 

And vegan racecar driver Leilani Münter is putting her cause célèbre on the fast track. After the success of her Cove–themed racecar last season, this year Leilani is aiming to burn rubber in a vegan-themed car that will expose 80 million NASCAR fans to the benefits of plant-based foods.

After we're done cheering for Leilani, we'll be switching the channel over to this season of Dancing With the Stars to root for our buds Andy Dick and Kellie Pickler. 

And when the cameras were pointed at Russell Simmons during New York Fashion Week, they may have gotten more than they bargained for. One of animals' greatest defenders, Simmons took the opportunity to express his feelings about fur:

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

When one of Ricky Gervais' young fans tweeted the star with the message "my parents agreed if you retweet this they will buy my sister a dog & let you name it," Ricky agreed but with one important stipulation. "A rescue dog tho," he mandated. We would expect nothing less from the man who is a constant voice for homeless animals, urging people to adopt, never buy, and bashing greedy breeders and puppy mills. And like many compassionate celebrities, Ricky consistently uses his Twitter account to reach millions of people with animal-friendly messages.

We can always count on Ricky to get an animal rights point across while he's making people laugh. And Jon Stewart did, too, with The Daily Show's humorous coverage of Iran's launching a monkey into space: "Iran, you think the CIA is tough? You just got PETA on your ass, and those guys don't f**k around." We'd love to hear Jon's take on Funny or Die's spot-on spoof of Dodge Ram's pandering "God Made a Farmer" Super Bowl ad, "God Made a Factory Farmer." 

And Waka Flocka Flame's hilarious Instagram photo had us laughing at how ridiculous people look in fur:

Happily, Beyoncé went fur-free at the Super Bowl, but she draped herself in python skin, iguana skin, and leather instead. PETA is urging the singer to take a cue from other beautiful, talented performers such as Carrie Underwood, who puts on a dynamic show in cruelty-free fashions. 

And it was the epitome of a dynamic cruelty-free show when Vaute Couture designer Leanne Mai-ly Hilgart presented the first completely vegan runway show at New York Fashion Week. Celebrities are flocking to the line, which is named after "haute couture" but spelled with a "v" for vegan.

New York isn't the only city celebrating cruelty-free fashion. Across the pond, our affiliate PETA U.K. presented the first-ever Vegan Fashion Awards, with celeb judges Sadie Frost and Meg Mathews honoring animal-friendly fashion from top designers and retailers such as Stella McCartney, Vivienne Westwood, and Topshop. 

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

Donna Karan might not have had legions of fans screaming for her at New York Fashion Week, but she did have legions of bunnies screaming outside her midtown Manhattan office on Saturday as she prepared for a show on Sunday.

Demonstrators showed passersby that uncarin' Karan likes her fur bloody, with a side of cruelty. Blasting the sounds of real rabbits screaming on fur farms as they are about to have their throats cut and their paws and heads chopped off, the protesters hoped to convince Cruella DeKaran that there's nothing warm and fuzzy about real fur.

You can help by letting Karan know that you prefer your fur to be faux and cruelty-free.

Written by Michelle Sherrow