Fashion presenter in rambling hypocrite! (4,4,7)
I believe the answer is:
look whos talking
'hypocrite' is the definition.
(accusation of hypocrisy)
'fashion presenter in rambling' is the wordplay.
'fashion' becomes 'look' (e.g. the latest look).
'presenter' becomes 'host' (as in the host of a TV show).
'in' indicates putting letters inside.
'rambling' becomes 'walking'.
'host' put within 'walking' is 'whostalking'.
'look'+'whostalking'='LOOK WHOS TALKING'
(Other definitions for look whos talking that I've seen before include "are you any different?" , "That's rich, coming from you!" .)