It's holiday time, which means the airports are at their busiest. If you're lucky, maybe you'll catch a glimpse of a celebrity in first class or unpacking their laptop in security. If you do, take note of what they're wearing: Boots that are hard to remove and hold up the rest of the line? An outfit more expensive than your entire wardrobe? Or a look that could have come out of your own closet? Click through this slideshow of 15 celebs flying in style...