India, March 11 -- Bollywood trivia alert! Hema Malini was hiding a secret under elaborate costumes of a Bollywood song: A baby on board. The veteran actor was eight months pregnant when she shot the song Bhagi Re Bhagi Brij Bala with her husband Dharmendra. Also read: When Dharmendra booked entire 100-room hospital for Hema Malini before Esha Deol's birth; Reddit calls it 'disgusting'

During her latest appearance on singing reality show, Indian Idol 15, Hema looked back at the shooting of colourful track Bhagi Re Bhagi Brij Bala, a track capturing the fun and emotions of Holi festival. The song was part of the film Rajput (1982), which also featured Dharmendra and Rajesh Khanna.

Talking to everyone present on the set, Hema Malini revea...