Move a loose dress (5)
I believe the answer is:
shift
I believe this clue is a double definition.
'move' is the first definition.
(I know that shift is a more specific form of the action move)
'a loose dress' is the second definition.
(shift is a type of dress)
(Other definitions for shift that I've seen before include "underskirt" , "Move; garment" , "Move (fast!)" , "Garment -- period of work" , "Move - working period" .)