People.com Royals Hold on to Your Hats! See the Top 10 Wackiest Headpieces at Royal Ascot The fashionable ladies of Royal Ascot did not disappoint when it came to their hat game By Erin Hill Erin Hill Twitter Senior News Editor, PEOPLE People Editorial Guidelines Published on June 16, 2016 04:50 PM Share Tweet Pin Email Photo: Samir Hussein/WireImage Hats off to racegoers at Royal Ascot! From inventive fascinators to colorful headpieces, the ladies of Royal Ascot did not disappoint when it came to their hat game at the annual racing event. The five-day spectacle comes with a strict dress code – and the rules are very specific when it comes to women s hats. • Want to keep up with the latest royals coverage? Click here to subscribe to the Royals Newsletter. According to the official site, hats should be worn; however a headpiece which has a solid base of four inches (10cm) or more in diameter is acceptable as an alternative to a hat. And by the looks of it, the ladies have gone well beyond that 4-inch suggestion. Check out some of the most shocking hats on display during the first three days of the event! 5 Ways to Garden Party at Buckingham Palace Like a Pro (Hint: Go for the Finger Sandwiches First!) Queen Elizabeth, Princess Kate and several other royals also got in on the hat action – see a few standouts. And don’t forget the men! See Prince William and Prince Harry in their top hat and tails. More than 300,000 people, including the royal family, make the annual visit to Berkshire for the popular outing. And while there are exciting races to take in, royal watching has become the main event!