I will be taking a mare and foal to Bramham horse trial on Thursday. We are entering in two classes and I am unsure what I should wear.

When we have gone to the british warmblood show we have to wear white to show off the horse. But as this class will be more like a sports horse class I would like any suggestions?

I was thinking maybe tweed jackets, but then would be need to wear a hat?

The two classes we have entered are:

'Mare with the potential to produce and eventer'
'Foal that is bred to event'

Any suggestions would be very helpful

Thanks