Obamas Greet the Queen, Wills & Kate in London...

 First Lady Michelle Obama (wearing a Barbara Tfank dress) walked with US President Barack Obama as they leave Winfield House, the official residence of the US Ambassador, in Regent's Park after meeting with His Royal Highness Prince Charles, Prince of Wales and Camilla, Duchess of Cornwall 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. During the trip they will attend a state banquet at Buckingham Palace and the President will address both houses of parliament at Westminster Hall.

 President Barack Obama and first lady Michelle Obama posed with Queen Elizabeth II and the Prince Philip, Duke of Edinburgh, at Buckingham Palace in London May 24, 2011. Obama is on a four-nation European visit to Ireland, England, France and Poland.

First Lady Michelle Obama met with Catherine, Duchess of Cambridge at Buckingham Palace on May 24, 2011 in London, England. 

President Barack Obama and First Lady Michelle Obama met with Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge at Buckingham Palace on May 24, 2011 in London, England. [photos via Getty Images]