Actor Aamir Khan has amassed a massive fan following over the years with smash hits like '3 Idiots', 'PK', 'Andaz Apna Apna' and many more. On social media, the actor keeps a modest profile. However, he took to Instagram to congratulate his sister Nikhat Khan Hegde. She is set to make her television debut with the upcoming show 'Banni Chow Home Delivery'.