Fashionable, chic (5)
I believe the answer is:
smart
I believe this clue is a double definition.
'fashionable' is the first definition.
(similar in meaning)
'chic' is the second definition.
(I know that chic can be written as smart)
(Other definitions for smart that I've seen before include "Intelligent; clean, tidy" , "Neat - clever" , "Fine" , "Bright or dapper" , "fly" .)