Towelling dressing gown (8)
I believe the answer is:
bathrobe
'towelling dressing gown' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for bathrobe that I've seen before include "Towelling dressing gown" , "you may take it after a shower" , "freshly-washed clothing" , "Towelling dressing-gown" , "Towelling garment" .)