Flag features (5)
I believe the answer is:
stars
'flag features' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for stars that I've seen before include "''What is the ...? What is the ...? '' (Juno and the Paycock)" , "Leading actors" , "Celestial bodies of hot gases" , "Heavenly bodies" , "Celebs - constellation" .)