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- NOTE ALTERNATE CROP. US President Barack Obama's wife Michelle greets Queen Elizabeth II during an audience at Buckingham Palace in London. (Photo by John Stillwell - PA Images/PA Images via Getty Images)
- US First Lady Michelle Obama meets pupils during a visit to the Elizabeth Garrett Anderson School in Islington, north London. (Photo by Dominic Lipinski - PA Images/PA Images via Getty Images)
- President Barack Obama And First Lady Michelle Obama Enjoy A Pint Of Guinness At Hayes Bar In His Ancestral Home Moneygall, Co Offaly During President Obama'S Visit To Ireland. (Photo by Mark Cuthbert/UK Press via Getty Images)
- Britain's Prince Harry laughs as U.S. first lady Michelle Obama catches a basketball during a game played by wounded warriors at Fort Belvoir, Virginia October 28, 2015. Prince Harry is at Fort Belvoir to meet soldiers and spread the word about the Invictus Games, which supports wounded warriors. Prince Harry spearheaded the Invictus Games, which was first held in London last September. The next Invictus Games is planned for May in Orlando, Florida. REUTERS/Kevin Lamarque TPX IMAGES OF THE DAY
- U.S. first lady Michelle Obama reacts during the women's singles tennis match between Serena Williams of the United States and Jelena Jankovic of Serbia at the All England Lawn Tennis Club during the London 2012 Olympics Games July 28, 2012. REUTERS/Stefan Wermuth (BRITAIN - Tags: OLYMPICS SPORT TENNIS POLITICS TPX IMAGES OF THE DAY)
- U.S. first lady Michelle Obama plays tennis during an event for U.S. military children and British and U.S. students at the U.S. embassy in central London July 27, 2012. REUTERS/Olivia Harris (BRITAIN - Tags: SPORT OLYMPICS POLITICS TPX IMAGES OF THE DAY)
- U.S. President Barack Obama (L) and first lady Michelle Obama react as the car carrying Queen Elizabeth and Prince Philip, Duke of Edinburgh, arrives at Winfield House in London, May 25, 2011. REUTERS/Larry Downing (BRITAIN - Tags: POLITICS IMAGES OF THE DAY) FOR BEST QUALITY IMAGE: ALSO SEE GM1E75Q1TOE01
- U.S. President Barack Obama (L) and his wife Michelle (2nd R) pose for a photograph with Britain's Queen Elizabeth and Prince Philip, the Duke of Edinburgh, at Buckingham Palace in London April 1, 2009. Obama said on Wednesday there was "enormous consensus" between the largest developed and emerging economies on plans to haul the world out of the deepest downturn since the 1930s, ahead of a G20 summit meeting. REUTERS/John Stillwell/Pool (BRITAIN BUSINESS POLITICS ROYALS)
- Britain's Prime Minister Gordon Brown (2nd L) and his wife Sarah (L) meet U.S. President Barack Obama (2nd R) and first lady Michelle in Downing Street in London April 1, 2009. World leaders will have their work cut out at a G20 summit where Obama makes his first major international sortie, under perhaps more pressure than anyone to show that the country where the crisis began can lead the way out. REUTERS/Toby Melville (BRITAIN POLITICS BUSINESS IMAGE OF THE DAY TOP PICTURE)
- Queen Elizabeth II (L) and US President Barack Obama (2ndL) pose with US First Lady Michelle Obama (2ndR) and Prince Philip (R), Duke of Edinburgh, in the Music Room of Buckingham Palace ahead of a State Banquet on May 24, 2011 in London, England. The 44th President of the United States, Barack Obama, and his wife Michelle are in the UK for a two day State Visit at the invitation of HM Queen Elizabeth II. AFP PHOTO / POOL (Photo credit should read -/AFP via Getty Images)
- WASHINGTON, DC - MAY 09: HRH Prince Harry and first lady Michelle Obama meet at the White House during the first day of his visit to the United States on May 9, 2013 in Washington, DC. HRH will be undertaking engagements on behalf of charities with which the Prince is closely associated on behalf also of HM Government, with a central theme of supporting injured service personnel from the UK and US forces. (Photo by John Stillwell - WPA Pool/Getty Images)
- US President Barack Obama and his wife Michelle Obama, wave after he delivered a keynote address at Waterfront Hall in Belfast, ahead of the G8 Summit. (Photo by Ben Birchall/PA Images via Getty Images)
- U.S. first lady Michelle Obama (R) poses with Britain's Prime Minister David Cameron and his wife Samantha at Number 10 Downing Street in London June 16, 2015. REUTERS/Darren Staples
- U.S. President Barack Obama and first lady Michelle receive Britain's Prime Minister David Cameron (bottom R) and his wife Samantha (2nd R) as they arrive for an official dinner in their honor at the White House in Washington, March 14, 2012. REUTERS/Jonathan Ernst (UNITED STATES - Tags: POLITICS)
- U.S. President Barack Obama and first lady Michelle Obama wait to receive Britain's Prime Minister David Cameron and his wife Samantha as they arrive for an official dinner in their honor at the White House in Washington, March 14, 2012. REUTERS/Jonathan Ernst (UNITED STATES - Tags: POLITICS)