After casting Kapoor as Ranja, Khan said she felt that Padukone was the first choice for the role of Heer.
"I felt that the Heer's part needed somebody who is young and dynamic," said Khan.
"I just couldn't see anybody beyond Deepika for the role, as I feel that she is one of the finest female actors among the Gen-Next's brigade."
The director expressed her excitement at casting the pair together and said that the decision to do so had been unanimous.
"Everybody is excited to see the pair together," she added.
Shooting of the musical romantic comedy will begin in April 2011.
