Amitabh Bachchan’s amazing mask, fun-filled reaction of grandchildren Agastya Nanda and Navya Naveli Nanda, watch videoBollywood megastar Amitabh Bachchan remains very active on social media. No day goes by in which Amitabh Bachchan does not give daily updates to the fans. On the 72nd Republic Day, Amitabh Bachchan greeted the fans. Also told him about one of his unique masks. He even greeted Republic Day by wearing that mask. In a funny video, Amitabh Bachchan was []