Prince William and Kate Middleton look toward Sir Menzies Campbell during a visit to the University of St Andrews on February 25, 2011 in St Andrews, Scotland. The couple returned to the university where they first met to launch a fundraising campaign for a new GBP 13 million scholarship and students support. The couple will marry in a much anticipated ceremony at Westminster Abbey on April 29th.…

Prince William and Kate Middleton during a visit to the University of St Andrews on February 25, 2011 in St Andrews, Scotland. The couple returned to the university where they first met to launch a fundraising campaign for a new GBP 13 million scholarship and students support. The couple will marry in a much anticipated ceremony at Westminster Abbey on April 29th. (Photo by Andrew Milligan - WPA …

Kate Middleton and Prince William during a visit to the University of St Andrews on February 25 2011 in St. Andrews, Scotland. Kate and William first met and graduated while students at St Andrews University. (Photo by Danny Lawson - WPA Pool/Getty Images)

Prince William with Kate Middleton and Prince Harry sign the book of condolence in memory of those who lost their lives in the Christchurch earthquake at the New Zealand High Commission on February 25, 2011 in London, England. Prince William and Kate Middleton also made a public visit to the University of St Andrews today. (Photo by David Parker - WPA Pool/Getty Images)

Prince William with Kate Middleton and Prince Harry sign the book of condolence in memory of those who lost their lives in the Christchurch earthquake at the New Zealand High Commission on February 25, 2011 in London, England. Prince William and Kate Middleton also made a public visit to the University of St Andrews today. (Photo by David Parker - WPA Pool/Getty Images)

Kate Middleton and Prince William launch the new Hereford Endeavour lifeboat as they visit Trearddur Bay Lifeboat Station at Anglesey on February 24, 2011 in Trearddur, Wales. The newly engaged couple named the Trearddur Bay Lifeboat Station's new Atlantic 85 inshore lifeboat the Hereford Endeavour. The vessel was launched during the naming ceremony and the crew demonstrate some of her rescue …

Prince William and Kate Middleton wave to the crowds after officially launching the new RNLI lifeboat 'Hereford Endeavour' at Trearddur Bay, Anglesey on February 24, 2011 in Trearddur, Wales. The newly engaged couple named the Trearddur Bay Lifeboat Station's new RNLI Atlantic 85 type inshore lifeboat the 'Hereford Endeavour'. The vessel was launched during the naming ceremony and the crew …

Kate Middleton and Prince William smile as they visit Trearddur Bay Lifeboat Station at Anglesey on February 24, 2011 in Trearddur, Wales. The newly engaged couple named the Trearddur Bay Lifeboat Station's new Atlantic 85 inshore lifeboat the Hereford Endeavour. The vessel was launched during the naming ceremony and the crew demonstrate some of her rescue capabilities. The country is gearing up …

Prince William and finacee Catherine Middleton arrive for a Christmas reception in aid of the Teenager Cancer Trust at theThursford Collection on December 18, 2010 in Fakenham, England. (Photo by Chris Jackson/Getty Images)

Prince Harry (L) and Prince William (C) and Kate Middleton (R)cheer on the English team during the RBS Six Nations Championship match between England and Italy at Twickenham on February 10, 2007 in London, England. (Photo by Richard Heathcote/Getty Images)

MARCH 08: Kate Middleton and Prince William share a joke at Greenmount College in Co Antrim during their one day visit on March 08, 2011 in County Antrim, Northern Ireland. The Royal Couple are visiting Northern Ireland as part of a tour of the Nation that a couple of weeks ago took them to St Andrews University in Scotland and Anglesey in North Wales to launch a lifeboat. This day-long trip to …

Kate Middleton tosses a pancake as Prince William looks on during a visit to City Hall on March 8, 2011 in Belfast, Northern Ireland. The Royal Couple are visiting Northern Ireland as part of a tour of the Nation that a couple of weeks ago took them to St Andrews University in Scotland and Anglesey in North Wales to launch a lifeboat. This day-long trip to Ireland has been kept top secret due to …

Kate Middleton and Prince William put in a fence post as they visit Greenmount Agricultural College on March 8, 2011 in Belfast, Northern Ireland. The Royal Couple are visiting Northern Ireland as part of a tour of the country that a couple of weeks ago took them to St Andrews University in Scotland and Anglesey in North Wales to launch a lifeboat. This day-long trip to Ireland has been kept top …

Prince William and Kate Middleton pose for photographs in the State Apartments of St James Palace on November 16, 2010 in London, England. After much speculation, Clarence House today announced the engagement of Prince William to Kate Middleton. The couple will get married in either the Spring or Summer of next year and continue to live in North Wales while Prince William works as an air sea …

Prince William and Kate Middleton pose for photographs in the State Apartments of St James Palace on November 16, 2010 in London, England. After much speculation, Clarence House today announced the engagement of Prince William to Kate Middleton. The couple will get married in either the Spring or Summer of next year and continue to live in North Wales while Prince William works as an air sea …

A close up of Kate Middleton's engagement ring as she poses for photographs in the State Apartments with her fiance Prince William of St James Palace on November 16, 2010 in London, England. After much speculation, Clarence House today announced the engagement of Prince William to Kate Middleton. The couple will get married in either the Spring or Summer of next year and continue to live in North…

Prince William and Kate Middleton pose for photographs in the State Apartments of St James Palace on November 16, 2010 in London, England. After much speculation, Clarence House today announced the engagement of Prince William to Kate Middleton. The couple will get married in either the Spring or Summer of next year and continue to live in North Wales while Prince William works as an air sea …