All Hands on Pec: What scares the pants off of Kristin Cavallari? Turns out it's not bona fide fears such as fading into irrelevance and obscurity. The starlet recently revealed that she's afraid of public speaking. So, to recap: Talking in front of a crowd? Terrifying. But posing at a Las Vegas pool party in a wee string bikini with a wax-before-wearing label and a mesh shirt that's conducting a thorough breast exam? That's just another boring day at the office.