Mega Star Chiranjeevi is going to shake a leg for a hot mass song in Powerstar Pawan Kalyan's forthcoming film Gabbar Singh, says the buzz. The actor turned politician will sizzle for couple of minutes alongside Pawan Kalyan. Recently  Harish Shankar, director of Gabbar Singh met Chiru and took his approval for this cameo, claims a production hand. The song is  the Telugu version of Munni Badnaam Hui and the director is planning to film it soon. Few years ago, Pawan Kalyan has made a special appearance in Chiranjeevi's Shankar Dada Zindabaad and it seems its the turn of Chiranjeevi to return the favor. The last time Chiranjeevi was seen in Magadheera with his son Ram Charan for couple of minutes.