A lot was being spoken about the leading lady of Akshay Kumar in his upcoming spy thriller, Bell Bottom, which has been inspired by real events. Earlier, it was being reported that Mrunal Thakur would romance the actor and after that, Nupur Sanon's name came out. However, now, it has been confirmed by Mumbai Mirror that War actress Vaani Kapoor will romance the actor.

Talking about the casting, a source close to the film said, "The script demanded a fresh pairing and Vaani was signed a week ago. She is excited to shoot with Akshay. It's not the usual female lead, a few romantic scenes, and some songs. She plays Akshay's wife and is integral to the narrative." The film will be co-produced by Jackky Bhagnani and Nikkhil Advani.