Britain's Queen Elizabeth II leaves after she and other members of the royal family attended a Christmas Service at St. Mary's church on the grounds of Sandringham Estate, the Queen's Norfolk retreat, England, Sunday, Dec. 25, 2011. (AP Photo/Lefteris Pitarakis)

Britain's Queen Elizabeth II meets with wellwishers gathered in Perth for a 'Great Aussie Barbecue' event as the queen's final public engagement in Australia on October 29, 2011. The 85-year-old monarch has been met with rapturous receptions in Canberra, Melbourne, Brisbane and Perth on her 10-day visit which some have speculated could be her last. AFP PHOTO / POOL / COLIN MURTY

Britain's Queen Elizabeth II (C) waves as she makes her way through thousands of flag-waving wellwishers gathered in Perth for a 'Great Aussie Barbecue' event as the queen's final public engagement in Australia on October 29, 2011. The 85-year-old monarch has been met with rapturous receptions in Canberra, Melbourne, Brisbane and Perth on her 10-day visit which some have speculated could be her last. AFP PHOTO / Greg WOOD

Britain's Queen Elizabeth II (2nd L) is presented with flowers as she meets with wellwishers gathered in Perth for a 'Great Aussie Barbecue' event as the queen's final public engagement in Australia on October 29, 2011. The 85-year-old monarch has been met with rapturous receptions in Canberra, Melbourne, Brisbane and Perth on her 10-day visit which some have speculated could be her last. AFP PHOTO / POOL / COLIN MURTY

Britain's Queen Elizabeth II waves goodbye as she boards a flight at Perth International Airport following a 10-day visit to Australia on October 29, 2011. The queen wrapped up an immensely successful tour of Australia in which tens of thousands flocked to catch a glimpse of their monarch, perhaps for the last time. AFP PHOTO / POOL / Lincoln Baker

Britain's Queen Elizabeth II smiles as she visits the Clontarf Aboriginal College in Perth on October 27, 2011. The queen, who arrived in Perth on October 26, will officially open the 54-nation Commonwealth Heads of Government Meeting (CHOGM) on October 28 where revamping succession to the British throne will be discussed, concluding a 10-day tour of her antipodean realm. AFP PHOTO / POOL / SHARON SMITH

Britain's Queen Elizabeth II smiles as she tours Clontarf Aboriginal College in Perth on October 27, 2011. The queen, who arrived in Perth on October 26, will officially open the 54-nation Commonwealth Heads of Government Meeting (CHOGM) on October 28 where revamping succession to the British throne will be discussed, concluding a 10-day tour of her antipodean realm. AFP PHOTO / POOL / SHARON SMITH

Britain's Queen Elizabeth II, center, watches Aboriginal dancers as she visits the Clontarf Aboriginal College in Perth, Australia, Thursday, Oct. 27, 2011. The Queen is on a ten-day trip to Australia. (AP Photo/William West, Pool)

Britain's Queen Elizabeth II waves as she arrives at Clontarf Aboriginal College in Perth Thursday, Oct. 27, 2011. The queen is in Australia for an official visit and to attend the Commonwealth Heads of Government Meeting. (AP Photo/Paul Kane, Pool)

Britain's Queen Elizabeth II, left, receives an Australian rules football from aboriginal player Ben Wardduring during her visit to Clontarf Aboriginal college in Perth on Thursday, Oct. 27, 2011. Queen Elizabeth is in Australia for an official visit and to attend the Commonwealth Heads of Government Meeting. (AP Photo/Daniel Munoz, Pool)

Britain's Queen Elizabeth II looks at an Australian rules football during her visit to Clontarf Aboriginal college in Perth on Thursday, Oct. 27, 2011. Queen Elizabeth is in Australia for an official visit and to attend the Commonwealth Heads of Government Meeting. (AP Photo/Daniel Munoz, Pool)

Britain's Queen Elizabeth II is pictured during a visit to Clontarf Aboriginal College in Perth on October 27, 2011. The queen, who arrived in Perth on October 26, will officially open the 54-nation Commonwealth Heads of Government Meeting (CHOGM) on October 28 where revamping succession to the British throne will be discussed, concluding a 10-day tour of her antipodean realm. AFP PHOTO / POOL / Paul Kane

Britain's Queen Elizabeth II attends a function at the state reception at Government House during a visit to Melbourne on October 26, 2011. The queen is on a ten-day trip to Australia. AFP PHOTO / POOL

Queen Elizabeth II rides on a tram through Melbourne, Australia, Wednesday, Oct. 27, 2011. (AP Photo/Alex Coppel, POOL)

Queen Elizabeth II, center, accompanied by The Duke of Edinburgh, left, waves at well-wishers as they ride on a tram through Melbourne, Australia, Wednesday, Oct. 27, 2011. (AP Photo/Alex Coppel, POOL)

TO GO WITH YEAR-2011-BRITAIN-ROYALS BY ROBIN MILLARD (FILES) In a file picture taken on May 3, 2011 Britain's Queen Elizabeth II smiles as she visits the Newmarket Day Centre. Queen Elizabeth II's diamond jubilee in 2012 should put the icing on an "annus mirabilis" for the British royals during which the world watched Prince William's wedding to Kate Middleton. AFP PHOTO / POOL / CHRIS RADBURN

(FILES): This October 11, 2010 file photo shows Britain's Queen Elizabeth standing before the specially commissioned portrait of herself in 'The Queen's Room' during her tour of Cunard's new cruise ship the 'Queen Elizabeth' in Southampton, southern England. A Canadian government decree that the Queen's portrait be displayed in all embassies and missions abroad triggered an angry response Friday, September 9, 2011, from a former diplomat and an opposition lawmaker. "This decision is retrograde and anachronistic," said Paul Heinbecker, Canada's erstwhile ambassador to the United Nations. "After 60 years of emancipation, this is a step back for our country," he added. Foreign Minister John Baird's office confirmed that all of its diplomatic missions had been told to raise a portrait of the Queen, given that she is Canada's head of state. The move was largely seen as a sign of ever better ties with Britain after the success of Prince William and his wife Catherine's first official overseas trip which saw them feted by the Canadian public in late June and early July 2011. AFP PHOTO / Files / Pool / ARTHUR EDWARDS

HM Queen Elizabeth II accompanied by HRH The Duke Of Edinburgh attends the annual Maundy Thursday Service, this year held at Guildford Cathedral, Surrey. Photo by Ian Jones

HM Queen Elizabeth II accompanied by HRH The Duke Of Edinburgh attends the annual Maundy Thursday Service, this year held at Guildford Cathedral, Surrey. Photo by Ian Jones

HM Queen Elizabeth II accompanied by HRH The Duke Of Edinburgh attends the annual Maundy Thursday Service, this year held at Guildford Cathedral, Surrey. Photo by Ian Jones