Compensation concerning attire (7)
I believe the answer is:
redress
'compensation' is the definition.
(I know that redress is a type of compensation)
'concerning attire' is the wordplay.
'concerning' becomes 're' (both can mean on a particular topic).
'attire' becomes 'dress' (dressing is a kind of attiring).
're'+'dress'='REDRESS'
(Other definitions for redress that I've seen before include "Put right" , "set things right" , "Get back into gear" , "set straight again" , "Set right - compensation" .)