The 29-year-old "ABCD 2" star has changed his gym regime to beef up for the role. He shared a picture of his new bulked up look on Instagram.
"#badrinathkidhulaniya. Needed to change my training for the role. Changing training methods keeps gym workouts very interesting," he wrote in the caption.
Varun was also seen donning a tattoo of 'Badrinath' on his hand at several events he attended in last few days.
To be directed by Shashank Khaitan, the movie stars Alia Bhatt playing the female lead.
The actor will next be seen in action-adventure film "Dishoom," directed by his brother Rohit Dhawan. John Abraham and Jacqueline Fernandez are also part of the film.