Bent outfit (5)
I believe the answer is:
habit
This clue is a double definition.
'bent' is the first definition.
(I've seen this before)
'outfit' is the second definition.
(thesaurus)
(Other definitions for habit that I've seen before include "Dress - custom - practice" , "bent" , "What might one have a regular tendency to" , "It's second nature" , "Custom; clothing" .)