Beauty pageant wear (4)
I believe the answer is:
sash
'beauty pageant wear' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for sash that I've seen before include "Part of a window - decoration" , "Popular band in Northern Ireland" , "Framework holding window panes" , "Item of clothing - frame for glass" , "Type of sliding window" .)