Unfashionable garments from the suburbs (9)
I believe the answer is:
outskirts
'the suburbs' is the definition.
(I've seen this before)
'unfashionable garments' is the wordplay.
'unfashionable' becomes 'out' (synonyms).
'garments' becomes 'skirts' (skirt is a kind of garment).
'out'+'skirts'='OUTSKIRTS'
'from' acts as a link.
(Other definitions for outskirts that I've seen before include "borders" , "Fringes of a city" , "Outer regions (of town)" , "area away from town centre" , "Suburbs" .)