Dress designer finally gets an award (4)
I believe the answer is:
robe
'dress' is the definition.
(robing is a kind of dressing)
'designer finally gets an award' is the wordplay.
'finally' indicates one should take the final letters.
'gets' is a charade indicator (letters next to each other).
'an award' becomes 'obe' (I've seen this in other clues).
The final letter of 'designer' is 'r'.
'r'+'obe'='ROBE'
(Other definitions for robe that I've seen before include "Formal gown" , "official dress" , "Long loose garment or dressing gown" , "Clobber" , "Formal vestment" .)