The trailer of the Katrina Kaif and Sidharth Malhotra starrer 'Baar Baar Dekho' was released today. The film revolves around the love story of the characters 'Jai', portrayed by Sidharth, and 'Dia', played by Katrina. It reportedly features the concept of time travel. Directed by Nitya Mehra, the film is scheduled to release on September 9.