Varun Dhawan and director dad David Dhawan are busy shooting for the remake of Coolie No 1 also starring Sara Ali Khan. The first look posters from the movie were recently released, and we must say, the film looks like a laughter riot. Also, seems like David Dhawan is having a working birthday on the sets of the movie.

Sr Dhawan turned 64 today and Varun took to Twitter to wish his father a happy birthday. This is what he tweeted: