One of those who tweeted him was author Twinkle Khanna, daughter of the actor's Bobby heroine Dimple Kapadia, and Mr Kapoor tweeted back
"Happy birthday. May you get older, wiser and stop troubling Neetu aunty so much," Twinkle Khanna wrote on Twitter
Bollywood stars including Amitabh Bachchan, Shah Rukh Khan, Akshay Kumar, Rishi Kapoor, Priyanka Chopra, Karan Johar, Anupam Kher,Prachi Desai, Sonakshi Sinha, Twinkle Khanna, Ram Gopal Varma, Shilpa Shetty Kundra,Larad Dutta, Arjun Rampal and Arjun Kapoor shared pictures, videos and messages on social media expressing their patriotism.
Rajesh Khanna, the actor for whom the term 'superstar' was coined, died of cancer in July 2012. He was the star of films like Aradhana, Kati Patang and Safar. Twinkle, an author married to actor Akshay Khanna, is the elder of Rajesh Khanna's two daughters with actress Dimple Kapadia