Kate Middleton accepts the pin (Getty Images)
A group of thoughtful subway employees came together Wednesday to present the pregnant Duchess of Cambridge with a "Baby on Board" badge, which quietly asks commuters to give up their seats for those with buns in the oven.
While we highly doubt she'll ever have the occasion to use the button, the newest royal accepted the gift with great humor, even making remarks about wearing it home.
[Related: Stars on the Subway Photo Gallery]
Kate was joined by Prince Philip and Queen Elizabeth II for a tour of the historic Baker Street Tube station in honor of the 150th anniversary of the Underground. The station is best known for its connection to Sherlock Holmes – the fictional detective notoriously lived a stone's throw from the stop.
This also marked the first time we've seen the Queen since she was hospitalized with a stomach bug earlier this month.
Kate and Prince William are expecting their first child in July.
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