Naked or wear thin to reveal (2,3,3)
I believe the answer is:
in the raw
'naked' is the definition.
(I've seen this in another clue)
'wear thin to reveal' is the wordplay.
'to reveal' is an anagram indicator.
'wear'+'thin'='wearthin'
'wearthin' is an anagram of 'IN THE RAW'.
'or' acts as a link.
(Other definitions for in the raw that I've seen before include "Completely unclothed" , "without clothing at last?" , "Nude - or served uncooked" , "Naked, or without refining influence" , "Undressed" .)