Earlier, Navya Naveli Nanda, who shares a close bond with her grandfather and megastar Amitabh Bachchan, took to her Instagram stories to wish him on his 81st birthday. The gorgeous diva shared some unseen photos with Big B along with a sweet message.In one of the posts, Navya is seen striking a pose with her grandpa, grandma Jaya Bachchan, brother Agastya Nanda and cousin Aaradhya Bachchan in the photo. She captioned the post as, ‘Happy Birthday Nana’.