Vastavam web: Powerstar Pawan Kalyan’s popularity and fan following needs no special introduction. Hailing from the illustrious Mega family, Pawan redefined style and delivered back to back blockbusters in the early days of his filmy career. On the eve of his 47th birthday, Pawan Kalyan fans stormed social media with the biggest ever birthday trend. With more than 5 Million tweets, it is now the biggest ever birthday trend in India. Fans are taking social activities across Telugu states.