"The adorable Helenji joins the team of #Heroine. Privileged and honoured, " tweeted Bhandarkar.
The director, who has cast Kareena Kapoor as the lead in the movie, has also posted a picture with Helen. The 72-year-old, who was known for her impeccable moves during her peak, sports a traditional sari, bindi and spectacles for her look in the movie.
"Heroine" is said to take a behind-the-scenes look at a Bollywood actress's life. The film also features Arjun Rampal in a key role.