The film is based on the novel of the same name by Chetan Bhagat about a Bihari boy in quest of winning over the girl he loves.
"Finally, the story comes to life. Big day as #HalfGirlfriend begins shoot! @mohit11481 @arjunk26 @ShraddhaKapoor," Bhagat, who is one of the producers of the film, posted on Twitter alongside a picture of a clapperboard from the shoot.
Arjun, who plays a basketball player in the film Madhav Jha, wrote, "And so it begins... #halfgirlfriend #basketball @mohitsuri @shraddhakapoor Let's Play!!!"
"Half Girlfriend" is slated to hit theatres next year.