At first glance, Gratitude Vintage looks like any number of vintage shops around town with each of its many rooms filled with racks of clothes, baskets of belts, stacks of vinyl records and display cases teeming with knickknacks, baubles and trinkets. But as you make your way from room to room, soon you'll notice the hats. They're all over. In every room. Some are hung on display racks, but the majority are hanging from the walls–taking up nearly every square—well, round—inch of space. Known for its hat selection, the Oak Lawn-area shop typically boasts a revolving cast of 300 to 400, ranging in price from a few bucks to as high as $300 for some rare designer domes. But, luckily, the vast majority of the hats are tagged at under $40. This year marked Gratitude's 20th anniversary, though in 2008 owner Marion Weger moved the shop to a larger, swankier spot a few blocks away from the original location.