Alia Bhatt and Ranveer Singh starrer "Gully Boy", to be helmed by Zoya Akhtar, went on floors here on Sunday."And finally it39s Day 1 of 39Gully Boy39!!! Such a special film for me for various reasons! Wish me luckkkk! Your support and love means the world to me. Wohooo, let39s do this Ranveer, Zoya," Alia tweeted.The movie, backed by Farhan Akhtar and Ritesh Sidhwani39s Excel Entertainment, is reportedly a coming-of-age story based on the lives of street rappers in Mumbai.Sidhwani shared the clapboard of the movie, while Farhan wished the team "all the best" as the adventure begins.Filmmaker Rahul Dholakia and actress Sophie Choudry too sent in their good wishes.