Unnecessary embellishment (5)

I believe the answer is:
frill
'unnecessary embellishment' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for frill that I've seen before include "Shared feature of Mr Punch, Richard III" , "Gathered material" , "Unnecessary embellishment" , "Gathered strip as a trimming" , "Pleated strip of cloth trimming or an unnecessary extra" .)