Part of a dress (6)
I believe the answer is:
bodice
'part of a dress' is the definition.
('bodice' is part of 'dress')
This is all the clue.
(Other definitions for bodice that I've seen before include "Basque" , "Upper part of woman's dress" , "Close-fitting top of a dress" , "Corset" , "tight-fitting costume?" .)