See the Duchess of Cambridge and Her Majesty ride the rails in honor of the London Underground's 150th anniversary
Credit: Chris Radburn/Reuters/Landov
Updated: Wednesday Mar 20, 2013 | 07:00 PM EDT
By: Nancy Mattia
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Check out the sweetest snaps – including one bonus! – from the Prince of Cambridge's debut
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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.
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