Well I guess it's a toss up between Mumbai and Delhi (possibly Bangalore; a lot of models are from there). I've watched a couple of shows and from what the hosts/models or celebrities have said it seems that Mumbai is where Bollywood and celebrity culture is but the most stylish or innovative people are actually from Delhi. A bit like New York vs. L.A.. Los Angeles and Mumbai are places where style is more manufactured, where designer labels are considered trendy but New York and Delhi are where people do more "interesting" things with their clothing, where trends are actually born. This isn't my point of view, just what i've heard on Television.