Sparkling headwear (5)
I believe the answer is:
tiara
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">sparkling headwear</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for tiara that I've seen before include "special headgear" , "Jewelled head wear" , "Top decoration" , "Women's head ornament" , "Decorative headgear" .)