Sexy garments making comeback in popular nightclub? (7)
I believe the answer is:
hotspot
'popular nightclub?' is the definition.
(ie a hotspot for night life)
'sexy garments making comeback' is the wordplay.
'sexy' becomes 'hot' (similar in meaning).
'garments' becomes 'tops' (top is a kind of garment).
'making comeback' says the letters should be written in reverse.
'tops' backwards is 'spot'.
'hot'+'spot'='HOTSPOT'
'in' is the link.
(Other definitions for hotspot that I've seen before include "busy area" , "Nightclub" .)