Calvin ____ of fashion (5)
I believe the answer is:
klein
'calvin of fashion' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for klein that I've seen before include "Person of bottle" , "French artist" , "Psychoanalyst" , "A -- bottle is a closed surface with just one side" , "who is warning about climate change?" .)