The promo for the Dharma Productions' children's film has become the most-viewed video of the week in India.
Debut director Nair told Digital Spy: "The amount of love that the trailer has generated goes beyond anything I expected.
"I think the audience was happy to see something fresh and new, yet simple and relatable. I hope this love never stops pouring in."
Actors Imran Khan, Sidharth Malhotra, Varun Dhawan, Alia Bhatt, Arjun Kapoor and Parineeti Chopra all featured in short promotional videos speaking about the film's main character prior to the release of the trailer.
The movie is described as a coming-of-age story about Gippi, an overweight girl who, through the course of the film, learns to love herself for who she is.
The project stars Riya Vij, Divya Dutta, Doorva Tripathi, Arbaaz Kadwani, Jayati Modi and Taaha Shah.
The Karan Johar-produced film releases on May 10.
Watch the official trailer for Gippi below: