Fashionable, upmarket (5)
I believe the answer is:
smart
I believe this is a double definition.
'fashionable' is the first definition.
(similar in meaning)
'upmarket' is the second definition.
(I've seen this before)
(Other definitions for smart that I've seen before include "Chic; sting" , "Neat - clever" , "Chic - hurt" , "Elegant and stylish" , "Well turned out" .)