Tailor cut some for outfit (7)
I believe the answer is:
costume
'outfit' is the definition.
(thesaurus)
'tailor cut some' is the wordplay.
'tailor' indicates an anagram (I've seen this in other clues).
'cut'+'some'='cutsome'
'cutsome' is an anagram of 'COSTUME'.
'for' acts as a link.
(Other definitions for costume that I've seen before include "Rig" , "Actor's attire" , "Duds" , "(Historic etc) dress" , "ensemble" .)