Supporter's ribbon (7)
I believe the answer is:
rosette
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">supporter's ribbon</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for rosette that I've seen before include "Mark of affiliation" , "Test ore (anag) - badge" , "Prizewinner's decoration" , "Party wear" , "Horse show award" .)