Constant jet-setting can wreak havoc on your skin, but Olivia doesn't let her frequent travel dry her out. No matter where she's photographed, she always looks dewy and refreshed. While packing moisturizer is a tried-and-true solution to keeping your skin hydrated, there's one extra secret to dewy skin that might surprise you: highlighter. Before you head out to your next big event, swipe a pearly highlighter along the tops of your cheeks, or mix it in a bit with your foundation for an overall glow. This simple trick will have you camera-ready in a flash.