Giddy-yup.

My interest in the races begins and ends with hats. I am totally ok with this. And my goodness if there aren't some gems on etsy.
I think a shallow base on a hat is infinitely more attractive than the heavy-basined alternative:

And whoopee to the woman who can pull off a sculpted hat like this. Fortune has smile upon you:

Black tulle; a perennial favourite:

And the total show stopper. I die.:

On the whole I dislike rules in fashion but perhaps the races are an exception. No felt in Spring!