Got up without notice to speak directly to journalist (7)
I believe the answer is:
Here is my best explanation:
'got up' is the definition.
(dressing is a kind of getting up)
'without notice to speak directly to journalist' is the subsidiary indication.
'without' indicates named letters should be taken away.
'notice' becomes 'ad'.
'to speak directly' becomes 'address'.
'to journalist' becomes 'ed' (short for editor).
'address' with 'ad' taken out is 'dress'.
(Other definitions for dressed that I've seen before include "Put on clothes", "in fancy packaging", "Up and ready to go", "Clad", "When you buy them crabs might be", "curried", "Arranged", "How the turkey is made oven-ready", "with mayonnaise, say" and "in robes?".)