Rector involved in new appeal for clothing (7)
I believe the answer is:
apparel
'clothing' is the definition.
('apparel' can be a synonym of 'clothing')
'rector involved in new appeal' is the wordplay.
'rector' becomes 'r'.
'involved in' is an insertion indicator.
'new' indicates an anagram.
'appeal' is an anagram of 'appael'.
'r' put within 'appael' is 'APPAREL'.
'for' acts as a link.
(Other definitions for apparel that I've seen before include "costume" , "formal dress?" , "what's in the press?" , "Clothing, things to wear" , "Real pap (anag) - clothing" .)