Celebrate Mother's Day on Sunday, May 12, and decorate a donut for mom at your neighborhood Dunkin' Donuts location. All children 12 and under will receive a free heart-shaped donut to decorate for mom, from 7 to 11:00 a.m. on Sunday at all participating Dunkin' Donuts locations, including the one in Cedar Hill at 650 Uptown Blvd.