Part of DKNY (5)
I believe the answer is:
donna
'part of dkny' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for donna that I've seen before include "Spanish lady's title" , "Title of Spanish or Italian lady" , "Italian woman of rank" , "See 10" , "Title of Spanish or Portuguese lady" .)