Fashion industry (3,5)
I believe the answer is:
rag trade
'fashion industry' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for rag trade that I've seen before include "Informal description of clothing industry" , "dressmaking competition" , "Clothing business (colloq.)" , "Slang for the garment industry" , "Commonly, the clothing business" .)