Barack and Michelle Obama Meet With Queen Elizabeth and Prince Philip at Windsor Castle

Wonder on the off chance that they'll sing her "Glad Birthday"? President Barack Obama and his wife, Michelle, traveled to England on Friday, where they were welcomed on the grounds outside of Windsor Castle by Queen Elizabeth and Prince Philip.

The day after Queen Elizabeth's 90th birthday, President Obama shook hands with Her Royal Majesty, who wore a sky blue suit with a wrap to shield her hair from the wind. The First Lady was not far behind, wearing a purple printed dress with a naval force peacoat over top.

After a drive (in the same auto with Prince Philip driving!) to the château, the foursome had a private lunch together in Windsor Castle.

"The Queen and The Duke of Edinburgh welcome @POTUS @BarackObama and @FLOTUS @michelleObama to #WindsorCastle," the official British Monarchy Twitter handle composed.

It's been a major week for Queen Elizabeth, who postured for a picture with Prince Charles, Prince William, and little Prince George, making another arrangement of stamps out of appreciation for her enormous day.