For the remake version of megastar Amitabh Bachchan's 1973 film Zanjeer, Priyanka is performing an item number which is reportedly called Pinky.
"I have done a song for Priyanka in Zanjeer that is being choreographed by Ganesh Acharya. You will get to hear it in say two months' time when the trailer of Zanjeer will be out," Mamta said.
Acharya has earlier directed item numbers like Halkat Jawaani and Chikni Chameli.
Zanjeer, directed by Apoorva Lakhia, marks the Bollywood debut of Ram Charan Teja, South Indian actor and son of filmstar-turned-politician Chiranjeevi.
The film also stars Sanjay Dutt, Prakash Raj and Mahie Gill.