Choose the correct word to complete the sentences.

The value of a horse will ... if it wins a race at Ascot.
There is a dress ... strictly enforced on the day of the race.
The Royal Ascot is regularly ... by the royal family.
Women dress in impressive outfits ... of a formal dress and hat.
A lot of money is at ... in this important horse race.
She looked ridiculous wearing a ... fox hat on her head!