Randeep is currently riding high on the succcess of his latest release 'Sarbjit', based on the real-life story of Sarabjit Singh, the Indian farmer who was convicted for spying and terrorism and languished in a Pakistani jail for 23 years.
His sister Dalbir Kaur, who tried vigorously to secure his release from Pakistani jails, was played by Aishwarya Rai Bachchan.
The 'Kick' star Randeep essayed the role of Sarabjit Singh in the film.
The actor also shared a photograph of himself with Sarabjit's "real" sister Dalbir.
"Very warm, loving and happy birthday to my real/reel sister Dalbir Kaur...God bless 'Sarbjit'," Randeep tweeted.