Remember when we told you about Ranveer Singh and Anushka Sharma choreographing some of their own steps for their song Pehli Baar in Dil Dhadakne Do? Well, Kangana Ranaut and Imran Khan have joined the bandwagon and will soon be seen grooving per their own choreography in the first Katti Batti song Sarphira. You can hear a bit of the song in the film?s first trailer. The party song has Imran and Kangana rocking it at a club and it required the two of them to go crazy for the cameras.