The duo was made to rehearse together, spend as much time together for a period of two months by director Subhash Kapoor to build a chemistry like that of brothers for their roles.
"'Guddu Rangeela' is all about sticking together. It was crucial for Guddu and Rangeela to have chemistry and bonding. I asked both of them to spend time together, they partied together, spent a lot of time and even went on a bike ride in Himachal Pradesh," Kapoor said in a statement.
The "Jolly LLB" director told his team that in case one person was unavailable for rehearsal, then the session was to be cancelled.
The film is about two criminals who run an orchestra party. They take on a villain, who is way stronger than themselves which lands them in a soup.
The film, releasing on July 3, also features Aditi Rao Hydari and Ronit Roy.