Kabir-Rajvir the brothers

I always used to wonder why they took such a tall actor to play the role of Rajvir, KS's elder brother. Even his onscreen wife is so much shorter. Kabir we have seen so far really respects his older brother and looks up to him, even calls him dada. In yesterdays episode i finally realized that Kabir is literally looking up at him. It was no nice to see that - all the other actors in the show are all shorter than Kabir.