Dress designer finally gets honour (4)
I believe the answer is:
robe
'dress' is the definition.
(robing is a kind of dressing)
'designer finally gets honour' is the wordplay.
'finally' says to take the final letters.
'gets' is a charade indicator (letters next to each other).
'honour' becomes 'OBE' (Order of the British Empire award).
The final letter of 'designer' is 'r'.
'r'+'obe'='ROBE'
(Other definitions for robe that I've seen before include "Gown, rich dress" , "Formal vestment" , "Loose garment for Boer" , "Loose outer garment" , "Dressed buffalo hide" .)