A day for hats

Princess Beatrice of York waves as she 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.

Video: A new era for hats?

Britain's Queen Elizabeth II shakes hands with the Dean of Westminster as she arrives at the West Door of Westminster Abbey in London for the wedding of Britain's Prince William and Kate Middleton, on April 29, 2011.

Video: A new era for hats?

(L-R) Queen Sofia of Spain, Prince Felipe of Spain and Princess Letizia of Spain arrive to attend the royal wedding of Prince William to Catherine Middleton at Westminster Abbey on April 29, 2011, in London.

Video: A new era for hats?

Lady Helen Taylor and Mr. Timothy Taylor arrive to attend the royal wedding of Prince William to Catherine Middleton at Westminster Abbey on April 29, 2011, in London.

Video: A new era for hats?

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.

Video: A new era for hats?

Carole Middleton smiles as she arrives to attend the royal wedding of her daughter, Catherine Middleton, to Prince William of Wales at Westminster Abbey on April 29, 2011, in London.

Video: A new era for hats?

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

Video: A new era for hats?

A royal supporter waits along the processional route on the day of the wedding of Britain's Prince William and Kate Middleton, in central London, April 29, 2011.

Video: A new era for hats?

Prince and Princess Michael of Kent arrive to attend the royal wedding of Prince William to Catherine Middleton at Westminster Abbey on April 29, 2011, in London.

Video: A new era for hats?

Anne, the Princess Royal, 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.

Video: A new era for hats?

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

Video: A new era for hats?

Sophie Winkleman, Lady Frederick Windsor arrives to attend the royal wedding of Prince William to Catherine Middleton at Westminster Abbey on April 29, 2011, in London.

Video: A new era for hats?

Frances Osborne, wife of the Chancellor of the Exchequer George Osborne, arrives to attend the royal wedding of Prince William to Catherine Middleton at Westminster Abbey on April 29, 2011 in London.

Video: A new era for hats?

Prince Albert II of Monaco and Charlene Wittstock arrive to attend the Royal Wedding of Prince William to Catherine Middleton at Westminster Abbey on April 29, 2011 in London.

Video: A new era for hats?

Katharine, Duchess of Kent leaves the Abbey following the marriage of Their Royal Highnesses Prince William Duke of Cambridge and Catherine Duchess of Cambridge at Westminster Abbey on April 29, 2011 in London, England.

Video: A new era for hats?

Norma Major, wife of former British Prime Minister John Major, following the marriage of Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge at Westminster Abbey on April 29, 2011 in London, England.

Video: A new era for hats?

Tara Palmer-Tomkinson arrives to attend the Royal Wedding of Prince William to Catherine Middleton at Westminster Abbey on April 29, 2011, in London, England.

Video: A new era for hats?

Lady Saltoun comes out of Westminster Abbey in London, after the royal wedding service, on April 29, 2011.

Video: A new era for hats?

Singer Joss Stone leaves the Abbey following the Royal Wedding of Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge at Westminster Abbey on April 29, 2011, in London, England.

Video: A new era for hats?

Autumn Kelly 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.

Video: A new era for hats?

Deputy Prime Minister Nick Clegg's wife Miriam Gonzalez Durantez arrives to attend the Royal Wedding of Prince William to Catherine Middleton at Westminster Abbey on April 29, 2011 in London, England.

Video: A new era for hats?