Kate Middleton battles the wind at the Calgary Airport on July 7, 2011. She and Prince William went to Calgary to attend a famous rodeo demonstration to finish up their trip to Canada.
- [Chris Jackson/Getty Images]

Kate Middleton has a Marilyn Monroe moment while posing with her husband, Prince William, and Canadian soldiers at the airport in Calgary, Canada on July 7, 2011.
- [Ian Vogler - WPA Pool/Getty Images]

Kate Middleton and her father, Michael Middleton, arrive for her wedding to Prince William at Westminster Abbey on April 29, 2011 in London, England.
- [Pascal Le Segretain/Getty Images]

Kate Middleton (R) travels in a Rolls Royce Phantom VI, accompanied by her father Michael Middleton to Westminster Abbey in London for her wedding to Britain's Prince William, on April 29, 2011.
- [GEOFF CADDICK/AFP/Getty Images]

Kate Middleton showed off a slight baby bump during an official appearance in South London.
- [Chris Jackson/AFP/Getty Images]

Prince William and Kate Middleton have tried to appear above the fray on a visit to the Solomon Islands this week while their lawyers were busy back home.
- [Tony Prcevich/AFP/Getty Images]

Kate Middleton attends a Diamond Jubilee Reception at Guildhall on June 5, 2012 in London, England.
- [Chris Jackson/Getty Images]

Kate Middleton attends the UK premiere of War Horse at the Odeon Leicester Square on January 8, 2012 in London, England.
- [Ian Gavan/Getty Images]

Kate Middleton takes part in a St Patrick's Day parade as she visits Aldershot Barracks on St Patrick's Day on March 17, 2012 in England.
- [Chris Jackson/Getty Images]

Kate Middleton arrives to board the royal barge 'Spirit of Chartwell' during the Thames Diamond Jubilee Pageant on the River Thames in London on June 3, 2012.
- [/AFP/Getty Images]

Kate Middleton arrives at The Dulwich Picture Gallery on March 15, 2012 in London, England. Prince Charles, Prince of Wales introduced the Duchess of Cambridge to the work of The Prince's Foundation for Children and The Arts.
- [Tim Whitby/AFP/Getty Images]

Kate Middleton prepares to plant a tree during a visit to The Treehouse in Ipswich, eastern England, on March 19, 2012.
- [/AFP/Getty Images]

Kate Middleton, Duchess of Cambridge, accepts flowers from members of the crowd as she leaves Sandringham Church after the traditional Christmas Day service on December 25, 2011, in King's Lynn, England.
- [Chris Jackson/Getty Images]

Kate Middleton waves as she arrives at the West Door of Westminster Abbey in London for her wedding to Britain's Prince William, on April 29, 2011.
- [Odd Andersen/AFP/Getty Images]

Duchess Kate hugs a 6-year-old girl who is terminally ill with cancer. The little girl, named Diamond, greeted Kate at the airport when the royal newlyweds arrived in Calgary, Canada.
- [Chris Jackson/Getty Images]

Kate Middleton chose a matching blue hat when she attended a church service to mark Prince Philip's 90th birthday. The Duke and Duchess of Cambridge leave with other members of the royal family after the service on June 12, 2011 in Windsor, England.
- [Carl Court - WPA Pool/AFP/Getty Images]

Prince William sings beside his bride, Kate Middleton, and her father, Michael Middleton, on April 29, 2011 in London, England.
- [Dominic Lipinski/WPA Pool/Getty Images]

Catherine Middleton arrives at The Goring Hotel after visiting Westminster Abbey on April 28, 2011 in London, England. With less than 24 hours to go final preparations for the wedding of Prince William and Kate Middleton are in place.
- [Christopher Furlong/AFP/Getty Images]

Kate Middleton and Prince William talk with youngsters from a local soccer club at Witton County Park, during a visit Darwen Aldridge Community Academy on April 11, 2011, in Darwen, north-west England.
- [Alastair Grant/AFP/Getty Images]

Kate Middleton, fiancee of Britain's Prince William, smiles as she greets members of the public during a visit to Witton Country Park on April 11, 2011 in Darwen, England.
- [Alastair Grant/AFP/Getty Images]

Members of the Lifeguards Household Cavalry Mounted Regiment gather ahead of the wedding of Prince William and Kate Middleton, during a rehearsal in Hyde Park in central London, on April 14, 2011.
- [Ben Stansall/AFP/Getty Images]

Kate Middleton dolls are pictured at Hamley's toy store in central London, on April 20, 2011. The toy, selling for 35 pounds ($57), is a themed fashion doll that has been dressed and accessorized by seven British designers.
- [Ben Stansall/AFP/Getty Images]

Kate Middleton meets children as she leaves Rose Hill Primary School during a visit to Oxford on February 21, 2012 in Oxford, England.
- [Chris Jackson/AFP/Getty Images]

Kate Middleton arrives for a British Olympic Team GB gala event at the Royal Albert Hall in London, on May 11, 2012.
- [/AFP/Getty Images]

Kate Middleton walks through Market Square during a visit to Nottingham, central England, on June 13, 2012 with Britain's Queen Elizabeth II.
- [/AFP/Getty Images]

Kate Middleton visits Alder Hey Children's Hospital in Liverpool on Valentine's Day .
- [WPA/Pool/AFP/Getty Images]

An Italian tourist extends her hand over her idea of the "Royal Jewels" next to a cardboard mock up of Prince William and Kate Middleton outside Westminster Abbey a day ahead of the royal wedding on April 28, 2011, in London, England.
- [Sean Gallup/Getty Images]

Catherine Middleton arrives at The Goring Hotel after visiting Westminster Abbey on April 28, 2011 in London, England. With less than 24 hours to go final preparations for the wedding of Prince William and Kate Middleton are in place.
- [Christopher Furlong/AFP/Getty Images]

Kate Middleton, fiancee of Britain's Prince William, smiles as she greets members of the public during a visit to Witton Country Park on April 11, 2011 in Darwen, England.
- [Alastair Grant/AFP/Getty Images]

Prince William and Kate Middleton visit the University of St Andrews on Feb. 25, 2011, in St Andrews, Scotland.
- [Jeff J Mitchell/Getty Images]