Computer program redesigned real clothes (7)
I believe the answer is:
apparel
'clothes' is the definition.
('apparel' can be a synonym of 'clothes')
'computer program redesigned real' is the wordplay.
'computer program' becomes 'app'.
'redesigned' is an anagram indicator.
'real' with letters rearranged gives 'arel'.
'app'+'arel'='APPAREL'
(Other definitions for apparel that I've seen before include "Fancy gear" , "what's in the press?" , "it's generally put on!" , "Clothing, things to wear" , "whatever people have on" .)