How Come Sye Raa Characters All Look-A-Like?

Sye Raa Narasimha Reddy movie has big actors from various languages in important characters. But their looks seem to be very similar as if the character look designer couldn't think about variety.  

Chiranjeevi has beard and long hair. We saw his look last year as they released special teaser for the movie on his birthday.


Later, they kept releasing different looks of the actors who are part of the film. Vijay Sethupathi, Keecha Sudeepa, Amitabh Bachchan have similar getups in respect to facial hair and long hair-do.

Amitabh Bachchan and Jagapathi Babu characters have completely similar looks while Sethupathi, Sudeepa have completely similar looks.

Seems like director, Surrender Reddy rather than going for variety, he seems to have resorted to going for similar looks with small changes.