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Angela Simmons - In recent years, a number of stars have made the switch to a plant-based diet, and we gotta say: going green has definitely done their bodies good! By Britt Middleton Following after her Uncle Russ, Angela Simmons went meat-free several years ago. In fact, the fashion designer and vegetarian even posed in the buff for PETA in support of more people adopting a cruelty-free lifestyle. As for following a vegetarian diet, Simmons added, "I'm happy with it. I feel lighter — it's a good feeling." (Photo: Astrid Stawiarz/Getty Images for TRESemme)

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Russell Simmons - The business mogul, who has been a vegan for more than a decade, credits yoga for helping him to clean-up his diet. “The practice of yoga raised my consciousness to exactly what eating meat meant -- not only to my own health, but to my karma and the world at large,” he writes in a piece for the Ellen Degeneres Show. (Photo: Charley Gallay/Getty Images for TWC)

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Erykah Badu - Describing herself as a vegan-vegetarian, the soulful Ms. Badu first decided to take the plunge in 1997, around the same time she released Baduizm, her critically-acclaimed debut album. “I’m blessed to do anything I want so I decide to take the best care of my body and my family in the same way. Holistically. Vitally,” she tells Origin magazine. (Photo: Jason Merritt/BET/Getty Images for BET)

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Tia Mowry - The actress says setting a good example for her young son encouraged her to go vegan earlier this summer. Looking gorge in a dress made from strategically placed lettuce, she also appeared in her own PETA advertisement, telling the animal advocacy group, “Not only am I helping myself, I'm helping the animals out there, I'm helping the environment. Going vegan — I feel great." (Photo: Jason Merritt/Getty Images)

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Venus Williams - The tennis star says she went for a mostly vegan diet after being diagnosed with Sjogren's syndrome, an autoimmune disorder known to cause muscle pain and fatigue, in 2011. Though she tends to stick with fruits and veggies, which she says decrease inflammation in her body, Williams does sneak in the occasional indulgence sometimes.  (Photo: John Parra/Getty Images for GREY GOOSE)

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Serena Williams - The reigning U.S. Open women’s champion stays mostly meat-free. "Venus calls us "chegan" — because we cheat with a little bit of fish and chicken," she tells Bon Apetit. (Photo: Joe Scarnici/Getty Images)

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Mike Tyson - It may surprise you that this former heavyweight championship boxer fuels his body with tofu rather than red meat. In an interview with Oprah Winfrey earlier this year, he explained how veganism saved his life. “I was so congested from all the drugs and bad cocaine, I could hardly breathe, [I had] high blood pressure, [was] almost dying [and had] arthritis. And once I became a vegan all that stuff diminished.” (Photo: Ethan Miller/Getty Images)

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Ne-Yo - On New Year’s Day this year, the singer tweeted that he planned to give up meat and dairy in 2013. Keeping his fans updated on his progress, he later announced that after 35 days, he had re-introduced fish back into his diet to keep his energy levels up. So far, he appears to be maintaining his pescatarian lifestyle. We give him props for challenging himself! (Photo: Andrew H. Walker/Getty Images)

Photo By Photo: Andrew H. Walker/Getty Images

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Leona Lewis - The British beauty (who was named PETA’s Sexiest Vegetarian in 2008) abstains from meat altogether. The longtime vegetarian announced on Twitter last October that she had become vegan and even asked fans for recipe ideas. (Photo: Ben A. Pruchnie/Getty Images)

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Robin Quivers - Quivers, the counterpart to radio show host Howard Stern, credits a vegan lifestyle to helping her recover after a yearlong battle with cancer. (Photo: Cindy Ord/Getty Images)