yes, when u r watching movie u would find story quite familiars with some other movies of Hollywood and bollywood, but after leaving the cinema u would b still laughing from the jokes and good feeling that u did'NT waste your money... i would admit plot is not quite original but, yes, its also requires lots of talent to make an unoriginal story into such a fun ride, roller coaster ride.plus, acting was on the top of the notch,every actor did justice to his/her character,making u love them all.
the timing of jokes, quick lines, unexpected twist,strong performances, happy ending, a social message is what which make this movie a sure blockbuster.. so yes go out and watch this movie for sure