

Britain's Catherine, Duchess of Cambridge is seen smiling as she arrives for a visit to a community garden project at Elswick Park in Newcastle, northern England, October 10, 2012. Phil Noble/Reuters
Kate, the Duchess of Cambridge (c.), plays hockey during her visit to St. Andrew’s School, where she attended school from 1986 till 1995, in Pangbourne, England, Nov. 30, 2012. The royal, formerly known as Kate Middleton, played hockey and revealed her childhood nickname — Squeak — when she returned to her elementary school for a visit. Arthur Edwards//Reuters
Britain's Prince William (center l.) and his wife Kate (center r.) the Duke and Duchess of Cambridge, arrive in Tavanipupu, Solomon Islands, on a traditional war canoe Sept. 17, 2012. Rick Rycroft/AP
Kate, the Duchess of Cambridge shakes hands with well-wishers during a walk through a central city park in Kuala Lumpur, Malaysia, Sept. 14, 2012. Mark Baker/AP
Britain's Prince William, Duke of Cambridge and his wife Kate, Duchess of Cambridge, attend a 'healthy living cookery session' during a visit to Centrepoint's Camberwell Foyer in London on Wednesday, Dec. 21, 2011. Ben Stansall/AP
Britain's Prince William and his wife Kate, the Duke and Duchess of Cambridge, carry a wreath together to pay their respects to the war dead of World War II during a visit to the Kranji War Memorial in Singapore Sept. 13, 2012. Nicolas Asfouri/AP
Prince William and his wife Kate, the Duke and Duchess of Cambridge take their shoes off before entering a mosque in Kuala Lumpur, Malaysia Sept. 14, 2012. Mark Baker/AP
Britain's Prince William and his wife Catherine, Duchess of Cambridge drive from Buckingham Palace in an Aston Martin DB6 Mark 2, after their wedding in Westminster Abbey, in central London April 29, 2011. Dylan Martinez/Reuters
This April 29, 2011 file photo shows Prince William and Catherine, the Duchess of Cambridge, walking down the aisle at Westminster Abbey following their marriage in central London. AP
This is one of two official portrait photographs taken on Nov. 25, 2010 in the Council Chamber in the State Apartment in St James's Palace, London, to mark the engagement of Britain's Prince William and Kate Middleton. Mario Testino/Clarence House Press Office/AP
In this June 23, 2005 photo, Kate Middleton smiles following her graduation from St. Andrews University, Scotland. The Middleton Family/AP
Britain's Prince William and Kate Middleton pose together following their graduation from St. Andrews University, Scotland, on June 23, 2005. The Middleton Family/AP
This undated image shows Kate Middleton at age five. The Middleton Family/AP
In this undated image, Kate Middleton, at age three, is seen on vacation in England's Lake District. The Middleton Family/AP