Celebrity with journalist having gawped (6)
I believe the answer is:
stared
'gawped' is the definition.
(gawp means to stare at something)
'celebrity with journalist' is the wordplay.
'celebrity' becomes 'star' (a star is a celebrity or famous person).
'with' is a charade indicator (letters next to each other).
'journalist' becomes 'ed' (short for editor).
'star'+'ed'='STARED'
'having' is the link.
(Other definitions for stared that I've seen before include "Look fixedly at" , "Gazed at in steady or prolonged way" , "Looked with a fixed gaze" , "Looked at long and fixedly" , "Looked long and hard at" .)