Elegant headgear (5)
I believe the answer is:
tiara
'elegant headgear' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for tiara that I've seen before include "Jewelled head-ornament" , "Pope's triple-tiered crown" , "Decorative headband" , "Ornamental crescent-shaped headdress or Pope's diadem" , "Ornamental head band" .)