Hyderabad, Aug. 22 -- Actor Ram Charan has extended his heartfelt wishes to his father, megastar Chiranjeevi.

Calling his father "my first hero", Ram Charan wrote, "Happy Birthday Nanna @KChiruTweets. You have been my first hero, my biggest inspiration and someone I can always turn to. Through every high and low, your love, guidance and belief in me have been my greatest strength. I feel truly blessed to have you in my life. Wishing you good health, happiness and many more wonderful years ahead. Love you more than words can say, Nanna."

Earlier, many other celebrities poured in with birthday greetings.

Filmmaker Sandeep Reddy Vanga wrote, "HAPPY BIRTHDAY CHIRANJEEVI SIR. We remember the progression of our school years through the title...