As it says in the “Charity work and public image” section of her Wikipedia page, Kristin Cavallari once appeared in ads for PETA, the animal rights organization favored by celebutantes who want to pose nude “for a cause.” Though Kristin did not actually appear naked in her ad, which aired sometime between 2006 and 2007, she did roll around on the floor with a bunny and offer her candid thoughts about wearing fur.