Celebrity Central / Top 25 Celebs
Published: Wednesday March 20, 2013 19:00 PM EDT
More from PEOPLE
See More News
292 of 902
The expectant duchess gets pinned down with a "Baby on Board" button, given to pregnant riders so fellow passengers will know to offer up their seats. The Daily Mail reported Kate as telling the queen, "I will have to wear it at home!"
Copyright © 2015 Time Inc. All rights reserved. Reproduction in whole or in part without permission is prohibited.