Distinctive clothing for members (8)
I believe the answer is:
uniforms
'distinctive clothing for members' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for uniforms that I've seen before include "Distinctive clothing for members" , "What students may wear" , "Distinctive clothes worn by particular groups" , "Distinctive dress worn by particular groupss" , "Clothes worn by members of a group" .)