Shockingly sensational (5)
I believe the answer is:
lurid
'shockingly sensational' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for lurid that I've seen before include "Glaringly bright" , "Sensational; colourful" , "Horrifying - sensational" , "Unpleasantly vivid in colour" , "Bright and garish" .)