Hats off to stars and royalty

Elizabeth Hurley and Sarah Jessica Parker attend the Crown box during Crown Oaks Day at Flemington Racecourse on Nov. 3, 2011, in Melbourne, Australia.

Keep clicking to see other stars and royals donning unique (and, sometimes, outrageous) hats.

Sarah Jessica Parker wears a hat designed by Philip Treacy at the VRC Oaks Club Ladies Luncheon at Crown Palladium on Nov. 2, 2011, in Melbourne, Australia.

Singer Katy Perry accepts the Video Of The Year award onstage during the 2011 MTV Video Music Awards on Aug. 28, 2011, in Los Angeles.

Kate, Duchess of Cambridge arrives for the wedding of England rugby player Mike Tindall and Zara Phillips, the eldest granddaughter of Britain's Queen Elizabeth II, at Canongate Kirk in Edinburgh, Scotland, July 30, 2011.

Kirsty Wigglesworth/WPA Pool/ Getty Images

Camilla, Duchess of Cornwall, left, and Catherine, Duchess of Cambridge watch the Garter Service pass by on June 13, 2011, in Windsor, England.

Lady Gaga visits "The Morning Mash Up" at SiriusXM Studio on July 18, 2011, in New York.

Actress Demi Moore, wearing a Philip Treacy headpiece, arrives at the Metropolitan Museum of Art Costume Institute Gala on May 2, 2011, in New York.

Princess Beatrice of York, left, and sister Princess Eugenie of York arrive to attend the royal wedding of Prince William to Catherine Middleton at Westminster Abbey on April 29, 2011, in London. Their hats have since become famous for over-the-top design.

Zara Phillips arrives to attend the royal wedding of Prince William to Catherine Middleton at Westminster Abbey on April 29, 2011, in London.

David and Victoria Beckham arrive to attend the Royal Wedding of Prince William to Catherine Middleton at Westminster Abbey on April 29, 2011, in London.

Camilla, Duchess of Cornwall, arrives at the West Door of Westminster Abbey for the wedding of Britain's Prince William and Kate Middleton in London on April 29, 2011.

Prince William and Kate, Duchess of Cambridge stand on the balcony of Buckingham Palace after the Trooping the Colour parade on June 11, 2011, in London.

Queen Elizabeth II prepares to present the Gold Cup in the Parade Ring on day three of Royal Ascot at Ascot Racecourse on June 14, 2011, in Ascot, United Kingdom.

Princess Beatrice, right, and Princess Eugenie arrive for the Derby Festival at Epsom Downs Racecourse, June 4, 2011, in Epsom, England.

Elizabeth Hurley smiles in the parade ring on day three of Royal Ascot at Ascot Racecourse on June 14, 2011, in Ascot, England.

Kate Walsh visits the Mott's Garden Blend VIP suite during the 137th Kentucky Derby at Churchill Downs on May 7, 2011, in Louisville, Ky.

Country singer Miranda Lambert attends the 137th Kentucky Derby at Churchill Downs on May 7, 2011, in Louisville, Ky.

Actress Julie Benz attends the 137th Kentucky Derby at Churchill Downs on May 7, 2011, in Louisville, Ky.

Model Marissa Miller attends the 137th Kentucky Derby at Churchill Downs on May 7, 2011, in Louisville, Ky.

ESPN correspondent and former "Dancing with the Stars" contestant Erin Andrews attends the 137th Kentucky Derby at Churchill Downs on May 7, 2011, in Louisville, Ky.

Sarah Jessica Parker attends the UK premiere of "Sex And The City 2" at Odeon Leicester Square on May 27, 2010, in London.

Princess Beatrice walks around the parade ring on the first day of the Royal Ascot on June 16, 2009, in Ascot, England.

Sarah Jessica Parker arrives for the premiere of "Sex and the City" in London on May 12, 2008.

Paris Hilton arrives at Selfridges Department Store on Oxford Street to Launch her fragrance Can Can on May 15, 2008, in London.

Kate Middleton leaves Laura Parker Bowles' wedding to Harry Lopes at St Cyriac's Church, Lacock, on May 6, 2006, in Wiltshire, England.

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