We did it last year - daughter was 8
She had 3 classes - SHP, WHP and Veteran
pony turned out as it was for the class plus a tonne of glitter! For us that was 3 tack changes as we had plain bridle then plain + martingale and then show pony bridle - but we had an hour between each class thankfully!
child - stayed the same for all classes:
sparkly white stock
white sparkly hair bits - I used a scrunchie as I couldn't find plait ribbons - more prepared for this year!!!
normal showing cane/whip
this shows all the pics for a whole evening performance