Fashionable girl meeting an inhabitant of Mumbai, perhaps (6)
I believe the answer is:
indian
'inhabitant of mumbai perhaps' is the definition.
(Mumbai is an Indian city)
'fashionable girl meeting an' is the wordplay.
'fashionable' becomes 'in' (similar in meaning).
'girl' becomes 'di'.
'meeting' is a charade indicator (letters next to each other).
'in'+'di'+'an'='INDIAN'
(Other definitions for indian that I've seen before include "American aborigine" , "Delhi native perhaps" , "One from the sub-continent" , "Native American or denizen of New Delhi, say" , "Eg, native of Delhi" .)