London royals wedding on display

Britain's Queen Elizabeth II talks with Catherine, the Duchess of Cambridge as they view the dress she wore for her royal wedding to Britain's Prince William at the annual summer exhibition at Buckingham Palace in central London on July 22, 2011.  (AFP/John Stillwell)

Britain's Queen Elizabeth II (R) talks with Catherine, the Duchess of Cambridge as they view the dress she wore for her royal wedding to Britain's Prince William at the annual summer exhibition at Buckingham Palace in central London on July 22, 2011. The Alexander McQueen dress is being exhibited on a headless mannequin in the ballroom at Buckingham Palace, with the tiara and veil that the now Duchess of Cambridge wore, suspended above it.  (AFP/John Stillwell)

Britain's Queen Elizabeth II (R) walks with Catherine, the Duchess of Cambridge as they view the exhibitions of the Summer Opening of Buckingham Palace in central London on July 22, 2011. (AFP/John Stillwell)

Britain's Queen Elizabeth (R) and Catherine, the Duchess of Cambridge, look at the gown Catherine wore during her wedding to Britain's Prince William as they view the annual summer exhibition at Buckingham Palace in London on July 22, 2011.  (Reuters/John Stillwell)

Britain's Queen Elizabeth (R) and Catherine, the Duchess of Cambridge, look at the gown Catherine wore during her wedding to Britain's Prince William, as they view the annual summer exhibition at Buckingham Palace in London on July 22, 2011.  (Reuters/John Stillwell)

Cake designer Fiona Cairns poses with the cake that she created for the wedding of the Duke and Duchess of Cambridge in Buckingham Palace, Wednesday July 20, 2011, before it goes on display during the palace's annual summer opening. (AP/Lewis Whyld)

Britain's Queen Elizabeth II and Catherine, the Duchess of Cambridge view a glass cabinet containing the royal wedding cake made for her marriage to Britain's Prince William at the annual summer exhibition at Buckingham Palace in central London on July 22, 2011.  (AFP/John Stillwell)

Britain's Queen Elizabeth II and Catherine the Duchess of Cambridge view a glass cabinet containing part of the Royal Faberge collection at the annual summer exhibition at Buckingham Palace in central London on July 22, 2011. Britain's Queen Elizabeth II has reportedly described as 'creepy' a new exhibition featuring the wedding dress worn by the former Kate Middleton when she married Prince William in April.  (AFP/John Stillwell)

Catherine, the Duchess of Cambridge views the annual summer exhibition at Buckingham Palace in central London on July 22, 2011.  (AFP/John Stillwell)

Britain's Queen Elizabeth II talks with Catherine, the Duchess of Cambridge as they view the dress she wore for her royal wedding to Britain's Prince William at the annual summer exhibition at Buckingham Palace in central London, on July 22, 2011.  (AFP/John Stillwell)

Britain's Queen Elizabeth II (R) talks with Catherine, the Duchess of Cambridge as they view the dress she wore for her royal wedding to Britain's Prince William at the annual summer exhibition at Buckingham Palace in central London on July 22, 2011. The Alexander McQueen dress is being exhibited on a headless mannequin in the ballroom at Buckingham Palace, with the tiara and veil that the now Duchess of Cambridge wore, suspended above it. (AFP/John Stillwell)

Britain's Queen Elizabeth (L) and Catherine, Duchess of Cambridge at the annual summer exhibition of the wedding of Britain's Prince William and Kate Middleton at Buckingham Palace in London on July 22, 2011.  (Reuters/John Stillwell)