The musical pair received the most votes in an online poll of fellow vegetarians conducted by animal rights group PETA. According to PETA, singer of the hit song "Bleedin' Love" and Red Hot Chili Pepper star are clearly the winners.
Kiedis recently went vegan after learning about the worldwide depletion of fish in the oceans and after a doctor recommended a healthy vegan diet for his son.
"Soon after I went vegan I saw some documentary footage of what happens in the factory farming of cows. It sealed the deal," says Kiedis, who documented his earlier hard-partying ways in his autobiography, Scar Tissue.
Lewis is a strict vegan. "I am vegetarian so I don't have clothes, shoes or bags made from leather or suede or any animal products. I'm on a mission," she says.
Country singer Carrie Underwood and 'The Tonight Show' star Kevin Eubanks were last year's winners.
To view the complete list go to PETA.org