The Duke and Duchess of Cambridge on U.S. tour 

The Duke and Duchess of Cambridge have kicked off their whirlwind US visit with separate stops in Washington and New York.
Prince William sat with President Barack Obama at the White House while Kate visited a child development centre in Harlem.
As reporters crammed into the Oval Office to snap photos, William could be heard discussing the "excitement" and "chaos" surrounding the birth of his son George in 2013.
The two men did not make a formal statement to the press.