AP Photo/PA, Barry Batchelor
Britain's Prince William, left, is shown in the thick of the action as he plays for Apes Hill Club Barbados against Churchill Retirement Living for the Calcot Manor Hotel Cup at the Beaufort Polo Club, Westonbirt, near Tetbury, England, on June 17, 2007. The future king celebrated his 25th birthday on June 21.
AP Photo/Alastair Grant
From left, Princess Eugenie, Prince William, Queen Elizabeth II, Prince Philip and Prince Charles watch from the balcony of Buckingham Palace after taking part in the annual Trooping the Colour ceremony in London on June 16, 2007. William turned 25 on June 21; he's reportedly spending his birthday training with the Army at Lulworth in Dorset, England.
AP Photo/Alastair Grant
Britain's Prince William waves to the crowd as he returns to Buckingham Palace after taking part in the annual Trooping the Color ceremony in London on June 16, 2007. The ceremony marked his grandmother's 81st birthday. William turned 25th on June 21 and gained access to the interest and other income accrued on the $13 million he was left by his mother, who died in a Paris car crash in 1997.
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The Duchess of Cornwall sits alongside her stepson, Prince William, in a carriage as they arrive for The Queen's Birthday Parade at Horse Guards Parade in London on June 16, 2007. The ceremony is believed to have first been performed during the reign of King Charles II. In 1748, it was decided that the parade would be used to mark the official birthday of the Sovereign.
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Britain's Prince William visits Centrepoint homeless hostel in London on Dec. 20, 2006. Prince William turned 25 on June 21, 2007, and in doing so became entitled to part of the multimillion-pound inheritance left to him by his late mother, Princess Diana.
AP Photo/Alastair Grant
Prince William salutes during the Horse Guards Parade as he and the royal family take part in the annual Trooping the Colour ceremony in London on June 16, 2007.
GETTY IMAGES/Chris Jackson
Britain's royal brothers, Prince William, left, and Prince Harry, arrive at the Cavalry Old Comrades Association Annual Parade in Hyde Park in London on May 13, 2007. The brothers are planning a tribute concert in their mother's honor on July 1, in part so people will remember Diana's positive legacy.
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Britain's Prince William, President of the Football Association, at the presentation of the FA Cup player of the round awards at Wembley Stadium, site of the FA Cup Final on May 19, 2007.
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Now that he is 25, William also can marry without the consent of his grandmother, Queen Elizabeth II ... but no royal nuptials are on the horizon. William and his long-term girlfriend, Kate Middleton, announced in April that they had split.
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Britain's Prince William kisses his father, Prince Charles, as they depart the Royal Military Academy following the Sovereign's Parade in Camberley, west of London, on Dec. 15, 2006. Prince William was among the 446 officer cadets on parade; 227 received their commission and became officers.
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Britain's Prince William watches a British and Irish Lions training session on July 2, 2005 in Wellington, New Zealand.
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Britain's Prince William packs his equipment after completing a series of exercises with the Royal Air Force Mountain Rescue Team, at Holyhead mountain in north Wales, Monday Dec. 12, 2005. William was spending two weeks of training with the RAF mountain rescue team, undertaking the last part of his work experience program. Photo/Lefteris Pitarakis)
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Prince William catches a rugby ball during a training session with some members of the British and Irish Lions players in Wellington, New Zealand, Friday, July 1, 2005. Britain's Prince William displayed his rugby skills during a training session on the second day of his first solo trip abroad representing the British sovereign.
AP/David Cheskin, Pool
Britain's Prince William plays pool with friends at a bar at St. Andrews University where he was a student, Nov. 15, 2004. The prince, second in line to the British throne, turned 25 on June 21, 2007.
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Prince William is shown running the Sport Relief London Mile, Saturday, July 10, 2004.
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Earl Charles Spencer, Prince William, Prince Harry, and Prince Charles stand by the hearse as it pulls away from Westminster Abbey carrying the body Princess Diana after her funeral service in London, Saturday, Sept. 6, 1997. Nearly 10 years later, the princes are planning a July trinute concert in Diana's honor.
AP Photo/Phil Noble/pool
Britain's Prince William plays a marimba as the Shakarimba band, who were flown in from Botswana to play at the Prince's 21st birthday, rehearse in the Queen's Guard Chamber at Windsor Castle, Windsor, England, Friday June 20, 2003.
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Prince William of Wales, front row right, grimaces after he and friends of the royal family finished their ride on Splash Mountain at Disney World's Magic Kingdom in Florida on Aug. 26, 1993. It was the future British king's first and only trip to the United States.
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Prince William, right, with Princess Diana and Prince Harry, gather for the commemorations of VJ Day in London on Aug. 19, 1995. Prince William turned 25 on June 21, 2007, and in doing so became entitled to part of the multimillion-pound inheritance left to him by his late mother. The princes are planning a tribute concert in Diana's honor on July 1 in London.