Pop sensation (4)
I believe the answer is:
idol
'pop sensation' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for idol that I've seen before include "Graven image or worshipped person" , "Something worshipped" , "Images of devotion" , "'There's a one-eyed yellow -' (Hayes)" , "Honoured figure" .)