Reanna Livingston (left) and her dog Mason cross over Lake Clara Meer during the Ugly Sweater Run at Piedmont Park in Atlanta on Saturday, December 19, 2015.
December 19, 2015 Atlanta – Reanna Livingston (left) and her dog Mason cross over Lake Clara Meer during the Ugly Sweater Run at Piedmont Park in Atlanta on Saturday, December 19, 2015. Thousands of people donned their ugliest holiday themed gear to make their way through the course. JONATHAN PHILLIPS / SPECIAL