The Mere Brother Ki Dulhan stars apparently got on like a house on fire while shooting for the movie. They happen to have a lot in common, especially when it comes to music and are also planning to collaborate on a music album. Kat has tried her hand at crooning in the past. She has lent her voice to a nursery rhyme, which was an album composed by AR Rahman. Well we must say, now that Kat has entered the ‘all-rounder zone’, she’s decided not to look back.