It’s World Vegan Day on November 1, and there are plenty of celebrities who have adopted a completely plant-based diet. The vegan diet requires its eaters to ditch dairy and meat, as well as eliminate the use of animal byproducts — whether in fashion, such as fur, or in beauty, such as make-up that is animal tested. Here are a list of celebrities who have spoken out about their veganism — and why they chose the diet.