Overwhelming surprise for attractive blonde
I believe the answer is:
bombshell
I believe this is a double definition.
'overwhelming surprise' is the first definition.
(I've seen this before)
'attractive blonde' is the second definition.
(I've seen this before)
'for' acts as a link.
(Other definitions for bombshell that I've seen before include "Overwhelming surprise" , "attractive blonde" , "Unpleasant surprise" , "Explosion" , "Piece of devastating news" .)