Kristin Cavallari wears Hat Attack Kristin Cavallari wore Hat Attack on her Instagram! The fashionista rocked a monochromatic. Kristin Cavallari wore Hat Attack on her Instagram! The fashionista rocked a monochromatic look as she posed in the Avery Felt Fedora in Charcoa. Previous Article Rihanna's Dior Sunglasses Are Edgy as Ever Next Article Jennifer Lopez Carries Tyler Alexandra