Christina Hall and Ant Anstead are each sharing heartwarming tributes to their son Hudson! On Tuesday, Christina praised the now 3-year-old on Instagram. "Happy Big 3 Hudson!! SO smart, cute and sweet … We've been celebrating all week but can't wait to make him feel extra special today," she wrote. Her ex-husband Ant shared his love in his own post, too. "You are a very special boy! We have built a very close bond between us, and I love how connected we are," Ant said.