Set of clothes, outfit (8)
I believe the answer is:
ensemble
I believe this clue is a double definition.
'set of clothes' is the first definition.
(I've seen this before)
'outfit' is the second definition.
(I know that Ensemble is or was a ensemble)
(Other definitions for ensemble that I've seen before include "Small group or complete costume" , "chamber group?" , "Complete outfit - group of musicians" , "Group of musicians or set of clothes" , "Groups of musicians form a complete outfit" .)