Agree with costume (4)
I believe the answer is:
suit
I believe this is a double definition.
'agree with' is the first definition.
(thesaurus)
'costume' is the second definition.
(thesaurus)
(Other definitions for suit that I've seen before include "Befit" , "Matching jacket and trousers" , "diamonds possibly" , "Eg, hearts or clubs" , "Diamonds, for example" .)