This is the first Bollywood film to be produced and released by a Hollywood production company (Columbia TriStar Pictures).
A scene in the film (and a poster) shows Raj (Ranbir Kapoor) and Sakina (Sonam Kapoor) posing in a waltz-like manner, with the letters RK from a lighted sign in the background. This scene captures the logo of the R.K. Films Company, founded by Ranbir Kapoor's grandfather, Raj Kapoor.
The film was shot in tones of green, blue and black to give it a surreal, dream-like atmosphere.
According to Sanjay Leela Bhansali, the film is a tribute to his grandmother, who spent her whole life waiting for her son Navin Bhansali to return home. He found that aspect of love (of waiting for someone close to return to you) an interesting theme to capture in a film.