Ayushmann, 31, who is teaming up with the "Kill Dil" star for the first time for a film, took to Twitter to share his new look.
"Going for the clean shaven look. I tried this. Hitler/Chaplin meets Mehmood. Got rid of my beard. #MeriPyaariBindu," he wrote.
"Meri Pyaari Bindu", whose shooting has begun in Kolkata, is produced by Maneesh Sharma under Yash Raj Films bannner. It will be directed by debutant Akshay Roy.
Both Parineeti and Ayushmann, whose last projects were backed by YRF, will be crooning in the film.