Setter taking risk dancing in sweet garment (9)
I believe the answer is:
miniskirt
'garment' is the definition.
(I have seen 'Skimpy garment ' mean 'miniskirt' so perhaps 'garment' could also mean 'miniskirt')
'setter taking risk dancing in sweet' is the wordplay.
'setter' becomes 'i' (the person that set the crossword).
'taking' is a charade indicator (letters next to each other).
'dancing' indicates anagramming the letters.
'in' indicates putting letters inside.
'sweet' becomes 'mint' (mint is a kind of sweet).
'i'+'risk'='irisk'
'irisk' with letters rearranged gives 'iskir'.
'iskir' placed into 'mint' is 'MINISKIRT'.
(Other definitions for miniskirt that I've seen before include "Very short garment" , "Very short item of female attire" , "Skimpy garment" , "anything less wouldn't be proper" , "Popular attire in the 1960s" .)