Olivia Wilde

Olivia Wilde became a vegetarian at age 12 and went on to become a vegan in 2008. She was named PETA's Sexiest Vegetarian Celebrity in 2010. She says it's important to have a good support system, adding in a 2012 interview with ecorazzi.com, "The person who really showed me the best way to do it was Alicia Silverstone. We were shooting a movie called Butter and we were in Northern Louisiana — where there is no vegetarian food — and she cooked the most incredible recipes from The Kind Diet for me everyday. I have never looked or felt better in my life."