The "Fashion" star took to micro-blogging website Twitter, where she shared her views about the film.
"Shooting for #BajiraoMastani is a pleasure. Doing an incredibly heartbreaking song these days. Drama at its best with @RanveerOfficial n #SLB," Priyanka tweeted.
The historical romance also stars Ranveer Singh and Deepika Padukone.
The teaser of the upcoming film will be out on Thursday.