Coldstream Guards (and any Guards unit) do NOT wear a Busby, they wear a Bearskin.Wear whatever you want. Some years I wear a 19th century bicorne, other years a pickelhaube, when in undress, I wear a straw boater with upturned brim. I only have three pucka medals, so I supplement with 25 or so from here
Commemorative Medals, MoD Licensed Military Medals, Medal Framing, Medal Mounting, Medal Engraving, Commemorative Military Medals.bigburymint.com
I am particularly proud of my "Bevin's Boys and Bar".
Being a medical type, and having spent a short time with the NHS, I will also be adding a George Cross to my rack, available on Amazon.
I generally wear them pinned to my Flanaganesque fur coat, made from discarded Coldstream Guards Busbys.