20 Celebs Who Traded in Cheese For a Vegan Diet

After following a vegetarian diet for 15 years, Jessica Chastain told PETA that she made the switch to veganism in 2007. Since going vegan, Jessica said that she never has to worry about feeling healthy or lean. She's been known to travel with her own vegan meals to make things easier when she's on the go, and she recently bought her mother — a vegan chef — her own food truck.