Ant Anstead, the boyfriend of Renée Zellweger, has finally been reunited with all three of his children - just in time for Christmas.MORE: Renee Zellweger's boyfriend Ant Anstead breaks silence on romance following divorceTaking to Instagram on Thursday, the 42-year-old shared a heartwarming picture with his kids as he expressed his happiness over spending time with them over the festive season.WATCH: Christina Anstead's ex shares alarming house-hunting video with their sonHe shares two-year-old