Stylish member in neat arrangement (7)
I believe the answer is:
elegant
'stylish' is the definition.
(both can mean fancy or ornate)
'member in neat arrangement' is the wordplay.
'member' becomes 'leg' (member can mean a limb).
'in' means one lot of letters goes inside another.
'arrangement' indicates an anagram.
'neat' is an anagram of 'eant'.
'leg' inserted into 'eant' is 'ELEGANT'.
(Other definitions for elegant that I've seen before include "Tasteful and refined in appearance" , "Debonair, stylishly dressed" , "Modish" , "Well-turned" , "Refined gracefulness" .)