Ill-gotten shawl finally worn (6)
I believe the answer is:
stolen
'ill-gotten' is the definition.
(I've seen this in another clue)
'shawl finally worn' is the wordplay.
'shawl' becomes 'stole' (I've seen this before).
'finally' indicates one should take the final letters.
The last letter of 'worn' is 'n'.
'stole'+'n'='STOLEN'
(Other definitions for stolen that I've seen before include "plagiarised?" , "subject to plagiarism" , "Hot item" , "Taken without right" , "Snatched" .)