What hat will Trump wear to the inauguration?

During the campaign Trump always wore a hat outdoors when it was windy, because of the hair.

Now-cast says there’s a 66.7% chance it will be windy in DC on Jan 20, Wang says 99+%.

So what type of hat will Trump wear if it’s windy? And if no hat, what kind of product will be required to keep the hair in place for the 2 hours or so?

Perfect for a mildly windy inauguration.