When Rishi Kapoor meets Kiron Kher, she says her nickname is Bobby. He says, "Why don't I call you Dimple?" The eponymous female lead in Bobby (1973), was played by Dimple Kapadia.
Vivek Oberoi was chosen to play Karan Kapoor, but he declined. Aamir Khan and Hrithik Roshan were also offered the role respectively, but both of them declined too.
During the very first song, when Rhea hands Karan his messenger bag, he fails to hold it and the bag is shown dropping into the water below from the dock on which they are standing. In the next shot, Karan is wearing the bag as earlier.
Karan Kapoor: There're 6 hours before our flight to New York and sitting in this airport is boring. Why don't we go sight-seeing in Amsterdam. It shouldn't be a problem since you have a visa.