Fashionable delicacy, perfect (6)
I believe the answer is:
intact
'perfect' is the definition.
(I've seen this before)
'fashionable delicacy' is the wordplay.
'fashionable' becomes 'in' (in can mean fashionable or trendy).
'delicacy' becomes 'tact' (I've seen this in another clue).
'in'+'tact'='INTACT'
(Other definitions for intact that I've seen before include "Not damaged in any way" , "All in one piece" , "Flawless" , "without flaw?" , "Complete - unbroken" .)