Fashion creation producing feedback (8)
I believe the answer is:
reaction
'feedback' is the definition.
(thesaurus)
'fashion creation' is the wordplay.
'fashion' indicates an anagram.
'creation' is an anagram of 'REACTION'.
'producing' is the link.
(Other definitions for reaction that I've seen before include "Creation found in response to event" , "Side-effect from drug" , "Result of stimulus" , "Reflex; backlash" , "In mechanics, every action has an equal and opposite one" .)