Vidya Balan unveiled the trailer of her forthcoming movie 'Bobby Jasoos' at an event in PVR, Juhu, Mumbai, on Tuesday.The actress was wearing a pink kurta with pink and golden sharara pant.She had her hair braided on the side and completed the look with a pair of jhumka.Dia Mirza and her fiance Sahil Sangha, who are co-producing the movie under their banner Born Free Entertainment, were also present at the event. Dia looked chic and classy in the printed wrap dress.Also present at the launch were Supriya Pathak, Ali Fazal, Arjan Bajwa, Tanvi Azmi, Kiran Kumar and Prasad Barve.Vidya's mother Saraswathy Balan and father P. R. Balan were also spotted at the event.Touted to be India's first female detective film, 'Bobby Jasoos' is directed by Samar Shaikh.It is the story of Bobby, who wants to become the number one detective in the old city area of Hyderabad. Vidya will be seen in 22 different avatars in the movie and reportedly had given 122 look tests for it.The movie will hit the theatres on July 4