Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge attend the UK premiere of War Horse at the Odeon Leicester Square on January 8, 2012 in London, England. (Photo by Ian Gavan - WPA Pool /Getty Images)
Kate Middleton at the UK premiere of War Horse
Catherine, Duchess of Cambridge attends the UK premiere of War Horse at the Odeon Leicester Square on January 8, 2012 in London, England. (Photo by Ian Gavan - WPA Pool /Getty Images)
Catherine, the Duchess of Cambridge on Christmas
Catherine, the Duchess of Cambridge, arrives to attend the Royal family Christmas Day church service at St Mary Magdalene Church in Sandringham, Norfolk, eastern England, on December 25, 2011. (credit: BEN STANSALL/AFP)
Britain's Prince Charles (2ndL) and Cami
Britain's Prince Charles (2ndL) and Camilla, Duchess of Cornwall (R), Catherine, Duchess of Cambridge (back,R) and Prince William (back, L) arrive to attend the Royal family Christmas Day church service at St Mary Magdalene Church in Sandringham, Norfolk, eastern England, on December 25, 2011. (credit: BEN STANSALL/AFP/Getty Images)
British Royals Attend Christmas Day Service At Sandringham
Britain's Prince Charles (2ndL) and Camilla, Duchess of Cornwall (R), Catherine, Duchess of Cambridge (back,R) and Prince William (back, L) arrive to attend the Royal family Christmas Day church service at St Mary Magdalene Church in Sandringham, Norfolk, eastern England, on December 25, 2011. (credit: BEN STANSALL/AFP/Getty Images)
Prince William And Kate Middleton Visit Darwen
Prince William And Kate Middleton Visit Darwen
Prince William And Kate Middleton Visit Darwen
Prince William And Kate Middleton Visit Darwen
(credit: AFP PHOTO / ADRIAN DENNIS WPA POOL)
Prince William And Kate Middleton
Prince William And Kate Middleton Visit Northern Ireland
William and Kate visit Northern Ireland
Prince William And Kate Middleton Visit Northern Ireland
Prince William And Prince Harry Accompanied By Miss Middleton Visit The New Zealand High Commission
Prince William And Kate Middleton Visit The University Of St Andrews
Prince William and Kate Middleton visit St Andrews
Prince William and Kate Middleton visit St Andrews
Kate Middleton meets members of the public during a visit to the University of St Andrews, where she and Prince William first met. (credit: David Cheskin/PA Wire)
Prince William And Kate Middleton Visit The University Of St Andrews
Prince William and Kate Middleton visit Trearddur Bay RNLI Lifeboat Station
Prince William and Kate Middleton officially launch the new RNLI's lifeboat 'Hereford Endeavour' at Trearddur Bay, Anglesey on February 24, 2011 in Trearddur, Wales. (Photo by Chris Jackson/Getty Images)
Prince William and Kate Middleton visit Trearddur Bay RNLI Lifeboat Station
Prince William and Kate Middleton (credit: Chris Jackson/Getty Images)
Prince William and Kate Middleton visit Trearddur Bay RNLI Lifeboat Station
Prince William and Kate Middleton visit Trearddur Bay RNLI Lifeboat Station
Prince William and Catherine Middleton attend a Christmas Spectacular
Clarence House Announce The Engagement Of Prince William To Kate Middleton
Clarence House Announce The Engagement Of Prince William To Kate Middleton
Clarence House Announce The Engagement Of Prince William To Kate Middleton
Kate Middleton in 2008
Kate Middleton in 2008
Kate Middleton at the Calcot Manor Hotel Country Fair 2008
Cheltenham Festival
AFRIKA AFRIKA - VIP Arrivals
AFRIKA AFRIKA - VIP Arrivals
Concert For Diana - Performance
Concert For Diana - Performance
Cheltenham Gold Cup
Cheltenham Gold Cup
Kate Middleton in 2007
Kate Middleton In 2007
Middleton at the Wedding Of Laura Parker Bowles & Harry Lopes
The Championships - Wimbledon 2008 Day Six
Concert For Diana - Performance
Kate Middleton On Her 25th Birthday In 2007
Kate Middleton in 2008
Kate Middleton On Her 25th Birthday In 2007
Cheltenham Festival
Prince William Graduates From St Andrews
Kate Middleton On Her 25th Birthday in 2007
Kate Middleton In 2008
Kate Middleton in 2005
Kate Middleton In 2005
Kate Middleton In 2008
Kate Middleton in 2005
The Middleton Family Release Images Of Kate Middleton
The Middleton Family Releases Images Of Kate Middleton