The Dubai World Cup is an annual occasion where women dress to impress at the world's richest horserace. An array of outfits will be on display at Meydan when March 25 arrives and one vital element of the race day ensemble is the hat. From huge head pieces that are out of this world, to delicate fascinators to complement your dress. Here are some of the pieces you'll want to consider. See the gallery for what's on offer.