The actress shared a photograph from the set of the film in which she is seen cutting a cake with co-stars Ranbir Kapoor, who plays the lead role, Vicky Kaushal and the director.
"The happiest place in the world is on a @RajkumarHirani film set #SanjayDuttBiopic #RanbirKapoor @vickykaushal09," Dia wrote on Twitter.
The actress previously collaborated with Hirani in "Lage Raho Munnabhai.
Disclaimer: No Business Standard Journalist was involved in creation of this content