The Royals

Kate & the Queen's Adventures on the London Tube

See the Duchess of Cambridge and Her Majesty ride the rails in honor of the London Underground's 150th anniversary

CURTAIN CALL

Lest you forget, there's a big reminder that you are in the presence of a queen. The 86-year-old monarch, who spent several days hospitalized with a stomach bug last week, dresses in an elegant tweed outfit for the historic "tube" network tour.