Circlet of flowers (6)
I believe the answer is:
wreath
'circlet of flowers' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for wreath that I've seen before include "Flower arrangement" , "Ring of intertwined foliage" , "Circular band, of flowers say" , "A ring of leaves and flowers" , "Circle of flowers in honour of dead" .)