Suspicion about the Parisian's jacket (7)
I believe the answer is:
doublet
'jacket' is the definition.
(doublet is a kind of jacket)
'suspicion about the parisian's' is the wordplay.
'suspicion' becomes 'doubt' (I've seen this before).
'about' indicates putting letters inside.
'the parisian' becomes 'le' (definite article in French).
'doubt' placed around 'le' is 'DOUBLET'.
(Other definitions for doublet that I've seen before include "Close-fitting padded jacket of Tudor and Stuart England" , "Old garment worn with hose" , "Jacket once, went with hose" , "Historical jacket" , "Former male, close-fitting body garment" .)