Earlier in 1995, Aamir, had acted as a girl for a song in the film Baazi.
For the song the perfectionist actor sat for hours to get the make-up right and also had his full body waxed to get into the literal skin of his character.
Sources say the actor is playing himself in this new ad and as part of research on women he dresses up to visit his neighbour as a woman to get a better understanding.
It took the actor more than two hours to get ready for the ad where he will be wearing lipstick, kajal and other make-up to look like a woman and also dressing like a woman in a salwar kameez and bra.
Earlier in 2005 and 2008, the actor played a woman in a cola ad and a digital TV brand.
Fans will surely be looking forward to seeing the versatile actor in the shoes of a woman again.