Sony Entertainment Television's 'Yeh Un Dinon Ki Baat Hai' recently had a special visitor on the sets – Rekha Bhagat, mother of the famed Indian author – Chetan Bhagat. Rekha Bhagat, being one of the loyal viewers of the 90s show had expressed an interest to visit the sets and meet the star-cast. Rekhaji wanted to congratulate the actors on doing a fabulous job of re-creating the yester year era for the enjoyment of the audiences.