KCs ( Informal ) (5)

I believe the answer is:

silks

(Other definitions for silks that I've seen before include "Special clothing for jockeys" , "barristers" , "QCs" , "Jockey outfit" , "Rider's uniform" .)

I've seen this clue in The Independent.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.