Dressing or attire given twist (11)
I believe the answer is:
vinaigrette
'dressing' is the definition.
(I know that vinaigrette is a type of dressing)
'attire given twist' is the wordplay.
'twist' indicates an anagram (a twisted or distorted version of the letters).
'attire'+'given'='attiregiven'
'attiregiven' with letters rearranged gives 'VINAIGRETTE'.
'or' acts as a link.
(Other definitions for vinaigrette that I've seen before include "French dressing" , "that will be put on the table in France" , "sharp dressing" , "Salad dressing" .)