Want dress jazzed up for swingers’ club? (2,7)
I believe the answer is:
st andrews
'swingers' club?' is the definition.
(St Andrews Links, golf club)
'want dress jazzed up' is the wordplay.
'jazzed up' indicates anagramming the letters.
'want'+'dress'='wantdress'
'wantdress' with letters rearranged gives 'ST ANDREWS'.
'for' is the link.
(Other definitions for st andrews that I've seen before include "Here college" , "town with notable links" , "Famous golf course in Scotland, named after patron saint" , "Midlands ground" , "cross" .)