Model featured in tabloid shock (4)
I believe the answer is:
stun
'shock' is the definition.
('stun' can be a synonym of 'shock')
'model featured in tabloid' is the wordplay.
'model' becomes 't' (Ford Model T car).
'featured in' is an insertion indicator.
'tabloid' becomes 'sun' (The Sun, UK newspaper).
't' going into 'sun' is 'STUN'.
(Other definitions for stun that I've seen before include "Make dazed or numb" , "Surprise greatly, knock someone''s socks off" , "Confound" , "Daze, concuss" , "Put out for the count" .)